(function () {
    'use strict';

    /**
     * Create a cached version of a pure function.
     */
    function cached (fn) {
        var cache = Object.create(null);
        return function cachedFn (str) {
            var hit = cache[str];
            return hit || (cache[str] = fn(str))
        }
    }

    /**
     * Hyphenate a camelCase string.
     */
    var hyphenate = cached(function (str) {
        return str.replace(/([A-Z])/g, function (m) { return '-' + m.toLowerCase(); })
    });

    /**
     * Simple Object.assign polyfill
     */
    var merge =
        Object.assign ||
        function (to) {
            var arguments$1 = arguments;

            var hasOwn = Object.prototype.hasOwnProperty;

            for (var i = 1; i < arguments.length; i++) {
                var from = Object(arguments$1[i]);

                for (var key in from) {
                    if (hasOwn.call(from, key)) {
                        to[key] = from[key];
                    }
                }
            }

            return to
        };

    /**
     * Check if value is primitive
     */
    function isPrimitive (value) {
        return typeof value === 'string' || typeof value === 'number'
    }

    /**
     * Perform no operation.
     */
    function noop () {}

    /**
     * Check if value is function
     */
    function isFn (obj) {
        return typeof obj === 'function'
    }

    var config = merge(
        {
            el: '#app',
            repo: '',
            maxLevel: 6,
            subMaxLevel: 0,
            loadSidebar: null,
            loadNavbar: null,
            homepage: 'README.md',
            coverpage: '',
            basePath: '',
            auto2top: false,
            name: '',
            themeColor: '',
            nameLink: window.location.pathname,
            autoHeader: false,
            executeScript: null,
            noEmoji: false,
            ga: '',
            mergeNavbar: false,
            formatUpdated: '',
            externalLinkTarget: '_blank',
            routerMode: 'hash',
            noCompileLinks: []
        },
        window.$docsify
    );

    var script =
        document.currentScript ||
        [].slice
            .call(document.getElementsByTagName('script'))
            .filter(function (n) { return /docsify\./.test(n.src); })[0];

    if (script) {
        for (var prop in config) {
            var val = script.getAttribute('data-' + hyphenate(prop));

            if (isPrimitive(val)) {
                config[prop] = val === '' ? true : val;
            }
        }

        if (config.loadSidebar === true) { config.loadSidebar = '_sidebar.md'; }
        if (config.loadNavbar === true) { config.loadNavbar = '_navbar.md'; }
        if (config.coverpage === true) { config.coverpage = '_coverpage.md'; }
        if (config.repo === true) { config.repo = ''; }
        if (config.name === true) { config.name = ''; }
    }

    window.$docsify = config;

    function initLifecycle (vm) {
        var hooks = [
            'init',
            'mounted',
            'beforeEach',
            'afterEach',
            'doneEach',
            'ready'
        ];

        vm._hooks = {};
        vm._lifecycle = {};
        hooks.forEach(function (hook) {
            var arr = (vm._hooks[hook] = []);
            vm._lifecycle[hook] = function (fn) { return arr.push(fn); };
        });
    }

    function callHook (vm, hook, data, next) {
        if ( next === void 0 ) next = noop;

        var queue = vm._hooks[hook];

        var step = function (index) {
            var hook = queue[index];
            if (index >= queue.length) {
                next(data);
            } else {
                if (typeof hook === 'function') {
                    if (hook.length === 2) {
                        hook(data, function (result) {
                            data = result;
                            step(index + 1);
                        });
                    } else {
                        var result = hook(data);
                        data = result !== undefined ? result : data;
                        step(index + 1);
                    }
                } else {
                    step(index + 1);
                }
            }
        };

        step(0);
    }

    var cacheNode = {};

    /**
     * Get Node
     * @param  {String|Element} el
     * @param  {Boolean} noCache
     * @return {Element}
     */
    function getNode (el, noCache) {
        if ( noCache === void 0 ) noCache = false;

        if (typeof el === 'string') {
            if (typeof window.Vue !== 'undefined') {
                return find(el)
            }
            el = noCache ? find(el) : (cacheNode[el] || (cacheNode[el] = find(el)));
        }

        return el
    }

    var $ = document;

    var body = $.body;

    var head = $.head;

    /**
     * Find element
     * @example
     * find('nav') => document.querySelector('nav')
     * find(nav, 'a') => nav.querySelector('a')
     */
    function find (el, node) {
        return node ? el.querySelector(node) : $.querySelector(el)
    }

    /**
     * Find all elements
     * @example
     * findAll('a') => [].slice.call(document.querySelectorAll('a'))
     * findAll(nav, 'a') => [].slice.call(nav.querySelectorAll('a'))
     */
    function findAll (el, node) {
        return [].slice.call(node ? el.querySelectorAll(node) : $.querySelectorAll(el))
    }

    function create (node, tpl) {
        node = $.createElement(node);
        if (tpl) { node.innerHTML = tpl; }
        return node
    }

    function appendTo (target, el) {
        return target.appendChild(el)
    }

    function before (target, el) {
        return target.insertBefore(el, target.children[0])
    }

    function on (el, type, handler) {
        isFn(type)
            ? window.addEventListener(el, type)
            : el.addEventListener(type, handler);
    }

    function off (el, type, handler) {
        isFn(type)
            ? window.removeEventListener(el, type)
            : el.removeEventListener(type, handler);
    }

    /**
     * Toggle class
     *
     * @example
     * toggleClass(el, 'active') => el.classList.toggle('active')
     * toggleClass(el, 'add', 'active') => el.classList.add('active')
     */
    function toggleClass (el, type, val) {
        el && el.classList[val ? type : 'toggle'](val || type);
    }

    function style (content) {
        appendTo(head, create('style', content));
    }



    var dom = Object.freeze({
        getNode: getNode,
        $: $,
        body: body,
        head: head,
        find: find,
        findAll: findAll,
        create: create,
        appendTo: appendTo,
        before: before,
        on: on,
        off: off,
        toggleClass: toggleClass,
        style: style
    });

    var inBrowser = typeof window !== 'undefined';

    var isMobile = inBrowser && document.body.clientWidth <= 600;

    /**
     * @see https://github.com/MoOx/pjax/blob/master/lib/is-supported.js
     */
    var supportsPushState =
        inBrowser &&
        (function () {
            // Borrowed wholesale from https://github.com/defunkt/jquery-pjax
            return (
                window.history &&
                window.history.pushState &&
                window.history.replaceState &&
                // pushState isn’t reliable on iOS until 5.
                !navigator.userAgent.match(
                    /((iPod|iPhone|iPad).+\bOS\s+[1-4]\D|WebApps\/.+CFNetwork)/
                )
            )
        })();

    /**
     * Render github corner
     * @param  {Object} data
     * @return {String}
     */
    function corner (data) {
        if (!data) { return '' }
        if (!/\/\//.test(data)) { data = 'https://github.com/' + data; }
        data = data.replace(/^git\+/, '');

        return (
            "<a href=\"" + data + "\" class=\"github-corner\" aria-label=\"View source on Github\">" +
            '<svg viewBox="0 0 250 250" aria-hidden="true">' +
            '<path d="M0,0 L115,115 L130,115 L142,142 L250,250 L250,0 Z"></path>' +
            '<path d="M128.3,109.0 C113.8,99.7 119.0,89.6 119.0,89.6 C122.0,82.7 120.5,78.6 120.5,78.6 C119.2,72.0 123.4,76.3 123.4,76.3 C127.3,80.9 125.5,87.3 125.5,87.3 C122.9,97.6 130.6,101.9 134.4,103.2" fill="currentColor" style="transform-origin: 130px 106px;" class="octo-arm"></path>' +
            '<path d="M115.0,115.0 C114.9,115.1 118.7,116.5 119.8,115.4 L133.7,101.6 C136.9,99.2 139.9,98.4 142.2,98.6 C133.8,88.0 127.5,74.4 143.8,58.0 C148.5,53.4 154.0,51.2 159.7,51.0 C160.3,49.4 163.2,43.6 171.4,40.1 C171.4,40.1 176.1,42.5 178.8,56.2 C183.1,58.6 187.2,61.8 190.9,65.4 C194.5,69.0 197.7,73.2 200.1,77.6 C213.8,80.2 216.3,84.9 216.3,84.9 C212.7,93.1 206.9,96.0 205.4,96.6 C205.1,102.4 203.0,107.8 198.3,112.5 C181.9,128.9 168.3,122.5 157.7,114.1 C157.9,116.9 156.7,120.9 152.7,124.9 L141.0,136.5 C139.8,137.7 141.6,141.9 141.8,141.8 Z" fill="currentColor" class="octo-body"></path>' +
            '</svg>' +
            '</a>'
        )
    }

    /**
     * Render main content
     */
    function main (config) {
        var aside =
            '<button class="sidebar-toggle">' +
            '<div class="sidebar-toggle-button">' +
            '<span></span><span></span><span></span>' +
            '</div>' +
            '</button>' +
            '<aside class="sidebar">' +
            (config.name
                ? ("<h1><a class=\"app-name-link\" data-nosearch>" + (config.name) + "</a></h1>")
                : '') +
            '<div class="sidebar-nav"><!--sidebar--></div>' +
            '</aside>';

        return (
            (isMobile ? (aside + "<main>") : ("<main>" + aside)) +
            '<section class="content">' +
            '<article class="markdown-section" id="main"><!--main--></article>' +
            '</section>' +
            '</main>'
        )
    }

    /**
     * Cover Page
     */
    function cover () {
        var SL = ', 100%, 85%';
        var bgc =
            'linear-gradient(to left bottom, ' +
            "hsl(" + (Math.floor(Math.random() * 255) + SL) + ") 0%," +
            "hsl(" + (Math.floor(Math.random() * 255) + SL) + ") 100%)";

        return (
            "<section class=\"cover\" style=\"background: " + bgc + "\">" +
            '<div class="cover-main"></div>' +
            '<div class="mask"></div>' +
            '</section>'
        )
    }

    /**
     * Render tree
     * @param  {Array} tree
     * @param  {String} tpl
     * @return {String}
     */
    function tree (toc, tpl) {
        if ( tpl === void 0 ) tpl = '';

        if (!toc || !toc.length) { return '' }

        toc.forEach(function (node) {
            tpl += "<li><a class=\"section-link\" href=\"" + (node.slug) + "\">" + (node.title) + "</a></li>";
            if (node.children) {
                tpl += "<li><ul class=\"children\">" + (tree(node.children)) + "</li></ul>";
            }
        });

        return tpl
    }

    function helper (className, content) {
        return ("<p class=\"" + className + "\">" + (content.slice(5).trim()) + "</p>")
    }

    function theme (color) {
        return ("<style>:root{--theme-color: " + color + ";}</style>")
    }

    var barEl;
    var timeId;

    /**
     * Init progress component
     */
    function init () {
        var div = create('div');

        div.classList.add('progress');
        appendTo(body, div);
        barEl = div;
    }
    /**
     * Render progress bar
     */
    var progressbar = function (ref) {
        var loaded = ref.loaded;
        var total = ref.total;
        var step = ref.step;

        var num;

        !barEl && init();

        if (step) {
            num = parseInt(barEl.style.width || 0, 10) + step;
            num = num > 80 ? 80 : num;
        } else {
            num = Math.floor(loaded / total * 100);
        }

        barEl.style.opacity = 1;
        barEl.style.width = num >= 95 ? '100%' : num + '%';

        if (num >= 95) {
            clearTimeout(timeId);
            timeId = setTimeout(function (_) {
                barEl.style.opacity = 0;
                barEl.style.width = '0%';
            }, 200);
        }
    };

    var cache = {};

    /**
     * Simple ajax get
     * @param {string} url
     * @param {boolean} [hasBar=false] has progress bar
     * @return { then(resolve, reject), abort }
     */
    function get (url, hasBar) {
        if ( hasBar === void 0 ) hasBar = false;

        var xhr = new XMLHttpRequest();
        var on = function () {
            xhr.addEventListener.apply(xhr, arguments);
        };
        var cached$$1 = cache[url];

        if (cached$$1) {
            return { then: function (cb) { return cb(cached$$1.content, cached$$1.opt); }, abort: noop }
        }

        xhr.open('GET', url);
        xhr.send();

        return {
            then: function (success, error) {
                if ( error === void 0 ) error = noop;

                if (hasBar) {
                    var id = setInterval(
                        function (_) { return progressbar({
                            step: Math.floor(Math.random() * 5 + 1)
                        }); },
                        500
                    );

                    on('progress', progressbar);
                    on('loadend', function (evt) {
                        progressbar(evt);
                        clearInterval(id);
                    });
                }

                on('error', error);
                on('load', function (ref) {
                    var target = ref.target;

                    if (target.status >= 400) {
                        error(target);
                    } else {
                        var result = (cache[url] = {
                            content: target.response,
                            opt: {
                                updatedAt: xhr.getResponseHeader('last-modified')
                            }
                        });

                        success(result.content, result.opt);
                    }
                });
            },
            abort: function (_) { return xhr.readyState !== 4 && xhr.abort(); }
        }
    }

    function replaceVar (block, color) {
        block.innerHTML = block.innerHTML.replace(
            /var\(\s*--theme-color.*?\)/g,
            color
        );
    }

    var cssVars = function (color) {
        // Variable support
        if (window.CSS && window.CSS.supports && window.CSS.supports('(--v:red)')) { return }

        var styleBlocks = findAll('style:not(.inserted),link');[].forEach.call(styleBlocks, function (block) {
            if (block.nodeName === 'STYLE') {
                replaceVar(block, color);
            } else if (block.nodeName === 'LINK') {
                var href = block.getAttribute('href');

                if (!/\.css$/.test(href)) { return }

                get(href).then(function (res) {
                    var style$$1 = create('style', res);

                    head.appendChild(style$$1);
                    replaceVar(style$$1, color);
                });
            }
        });
    };

    var RGX = /([^{]*?)\w(?=\})/g;

    var dict = {
        YYYY: 'getFullYear',
        YY: 'getYear',
        MM: function (d) {
            return d.getMonth() + 1;
        },
        DD: 'getDate',
        HH: 'getHours',
        mm: 'getMinutes',
        ss: 'getSeconds'
    };

    var tinydate = function (str) {
        var parts=[], offset=0;
        str.replace(RGX, function (key, _, idx) {
            // save preceding string
            parts.push(str.substring(offset, idx - 1));
            offset = idx += key.length + 1;
            // save function
            parts.push(function(d){
                return ('00' + (typeof dict[key]==='string' ? d[dict[key]]() : dict[key](d))).slice(-key.length);
            });
        });

        if (offset !== str.length) {
            parts.push(str.substring(offset));
        }

        return function (arg) {
            var out='', i=0, d=arg||new Date();
            for (; i<parts.length; i++) {
                out += (typeof parts[i]==='string') ? parts[i] : parts[i](d);
            }
            return out;
        };
    };

    var commonjsGlobal = typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};





    function createCommonjsModule(fn, module) {
        return module = { exports: {} }, fn(module, module.exports), module.exports;
    }

    var marked = createCommonjsModule(function (module, exports) {
        /**
         * marked - a markdown parser
         * Copyright (c) 2011-2014, Christopher Jeffrey. (MIT Licensed)
         * https://github.com/chjj/marked
         */

        (function() {

            /**
             * Block-Level Grammar
             */

            var block = {
                newline: /^\n+/,
                code: /^( {4}[^\n]+\n*)+/,
                fences: noop,
                hr: /^( *[-*_]){3,} *(?:\n+|$)/,
                heading: /^ *(#{1,6}) *([^\n]+?) *#* *(?:\n+|$)/,
                nptable: noop,
                lheading: /^([^\n]+)\n *(=|-){2,} *(?:\n+|$)/,
                blockquote: /^( *>[^\n]+(\n(?!def)[^\n]+)*\n*)+/,
                list: /^( *)(bull) [\s\S]+?(?:hr|def|\n{2,}(?! )(?!\1bull )\n*|\s*$)/,
                html: /^ *(?:comment *(?:\n|\s*$)|closed *(?:\n{2,}|\s*$)|closing *(?:\n{2,}|\s*$))/,
                def: /^ *\[([^\]]+)\]: *<?([^\s>]+)>?(?: +["(]([^\n]+)[")])? *(?:\n+|$)/,
                table: noop,
                paragraph: /^((?:[^\n]+\n?(?!hr|heading|lheading|blockquote|tag|def))+)\n*/,
                text: /^[^\n]+/
            };

            block.bullet = /(?:[*+-]|\d+\.)/;
            block.item = /^( *)(bull) [^\n]*(?:\n(?!\1bull )[^\n]*)*/;
            block.item = replace(block.item, 'gm')
            (/bull/g, block.bullet)
            ();

            block.list = replace(block.list)
            (/bull/g, block.bullet)
            ('hr', '\\n+(?=\\1?(?:[-*_] *){3,}(?:\\n+|$))')
            ('def', '\\n+(?=' + block.def.source + ')')
            ();

            block.blockquote = replace(block.blockquote)
            ('def', block.def)
            ();

            block._tag = '(?!(?:'
                + 'a|em|strong|small|s|cite|q|dfn|abbr|data|time|code'
                + '|var|samp|kbd|sub|sup|i|b|u|mark|ruby|rt|rp|bdi|bdo'
                + '|span|br|wbr|ins|del|img)\\b)\\w+(?!:/|[^\\w\\s@]*@)\\b';

            block.html = replace(block.html)
            ('comment', /<!--[\s\S]*?-->/)
            ('closed', /<(tag)[\s\S]+?<\/\1>/)
            ('closing', /<tag(?:"[^"]*"|'[^']*'|[^'">])*?>/)
            (/tag/g, block._tag)
            ();

            block.paragraph = replace(block.paragraph)
            ('hr', block.hr)
            ('heading', block.heading)
            ('lheading', block.lheading)
            ('blockquote', block.blockquote)
            ('tag', '<' + block._tag)
            ('def', block.def)
            ();

            /**
             * Normal Block Grammar
             */

            block.normal = merge({}, block);

            /**
             * GFM Block Grammar
             */

            block.gfm = merge({}, block.normal, {
                fences: /^ *(`{3,}|~{3,})[ \.]*(\S+)? *\n([\s\S]*?)\s*\1 *(?:\n+|$)/,
                paragraph: /^/,
                heading: /^ *(#{1,6}) +([^\n]+?) *#* *(?:\n+|$)/
            });

            block.gfm.paragraph = replace(block.paragraph)
            ('(?!', '(?!'
                + block.gfm.fences.source.replace('\\1', '\\2') + '|'
                + block.list.source.replace('\\1', '\\3') + '|')
            ();

            /**
             * GFM + Tables Block Grammar
             */

            block.tables = merge({}, block.gfm, {
                nptable: /^ *(\S.*\|.*)\n *([-:]+ *\|[-| :]*)\n((?:.*\|.*(?:\n|$))*)\n*/,
                table: /^ *\|(.+)\n *\|( *[-:]+[-| :]*)\n((?: *\|.*(?:\n|$))*)\n*/
            });

            /**
             * Block Lexer
             */

            function Lexer(options) {
                this.tokens = [];
                this.tokens.links = {};
                this.options = options || marked.defaults;
                this.rules = block.normal;

                if (this.options.gfm) {
                    if (this.options.tables) {
                        this.rules = block.tables;
                    } else {
                        this.rules = block.gfm;
                    }
                }
            }

            /**
             * Expose Block Rules
             */

            Lexer.rules = block;

            /**
             * Static Lex Method
             */

            Lexer.lex = function(src, options) {
                var lexer = new Lexer(options);
                return lexer.lex(src);
            };

            /**
             * Preprocessing
             */

            Lexer.prototype.lex = function(src) {
                src = src
                    .replace(/\r\n|\r/g, '\n')
                    .replace(/\t/g, '    ')
                    .replace(/\u00a0/g, ' ')
                    .replace(/\u2424/g, '\n');

                return this.token(src, true);
            };

            /**
             * Lexing
             */

            Lexer.prototype.token = function(src, top, bq) {
                var this$1 = this;

                var src = src.replace(/^ +$/gm, '')
                    , next
                    , loose
                    , cap
                    , bull
                    , b
                    , item
                    , space
                    , i
                    , l;

                while (src) {
                    // newline
                    if (cap = this$1.rules.newline.exec(src)) {
                        src = src.substring(cap[0].length);
                        if (cap[0].length > 1) {
                            this$1.tokens.push({
                                type: 'space'
                            });
                        }
                    }

                    // code
                    if (cap = this$1.rules.code.exec(src)) {
                        src = src.substring(cap[0].length);
                        cap = cap[0].replace(/^ {4}/gm, '');
                        this$1.tokens.push({
                            type: 'code',
                            text: !this$1.options.pedantic
                                ? cap.replace(/\n+$/, '')
                                : cap
                        });
                        continue;
                    }

                    // fences (gfm)
                    if (cap = this$1.rules.fences.exec(src)) {
                        src = src.substring(cap[0].length);
                        this$1.tokens.push({
                            type: 'code',
                            lang: cap[2],
                            text: cap[3] || ''
                        });
                        continue;
                    }

                    // heading
                    if (cap = this$1.rules.heading.exec(src)) {
                        src = src.substring(cap[0].length);
                        this$1.tokens.push({
                            type: 'heading',
                            depth: cap[1].length,
                            text: cap[2]
                        });
                        continue;
                    }

                    // table no leading pipe (gfm)
                    if (top && (cap = this$1.rules.nptable.exec(src))) {
                        src = src.substring(cap[0].length);

                        item = {
                            type: 'table',
                            header: cap[1].replace(/^ *| *\| *$/g, '').split(/ *\| */),
                            align: cap[2].replace(/^ *|\| *$/g, '').split(/ *\| */),
                            cells: cap[3].replace(/\n$/, '').split('\n')
                        };

                        for (i = 0; i < item.align.length; i++) {
                            if (/^ *-+: *$/.test(item.align[i])) {
                                item.align[i] = 'right';
                            } else if (/^ *:-+: *$/.test(item.align[i])) {
                                item.align[i] = 'center';
                            } else if (/^ *:-+ *$/.test(item.align[i])) {
                                item.align[i] = 'left';
                            } else {
                                item.align[i] = null;
                            }
                        }

                        for (i = 0; i < item.cells.length; i++) {
                            item.cells[i] = item.cells[i].split(/ *\| */);
                        }

                        this$1.tokens.push(item);

                        continue;
                    }

                    // lheading
                    if (cap = this$1.rules.lheading.exec(src)) {
                        src = src.substring(cap[0].length);
                        this$1.tokens.push({
                            type: 'heading',
                            depth: cap[2] === '=' ? 1 : 2,
                            text: cap[1]
                        });
                        continue;
                    }

                    // hr
                    if (cap = this$1.rules.hr.exec(src)) {
                        src = src.substring(cap[0].length);
                        this$1.tokens.push({
                            type: 'hr'
                        });
                        continue;
                    }

                    // blockquote
                    if (cap = this$1.rules.blockquote.exec(src)) {
                        src = src.substring(cap[0].length);

                        this$1.tokens.push({
                            type: 'blockquote_start'
                        });

                        cap = cap[0].replace(/^ *> ?/gm, '');

                        // Pass `top` to keep the current
                        // "toplevel" state. This is exactly
                        // how markdown.pl works.
                        this$1.token(cap, top, true);

                        this$1.tokens.push({
                            type: 'blockquote_end'
                        });

                        continue;
                    }

                    // list
                    if (cap = this$1.rules.list.exec(src)) {
                        src = src.substring(cap[0].length);
                        bull = cap[2];

                        this$1.tokens.push({
                            type: 'list_start',
                            ordered: bull.length > 1
                        });

                        // Get each top-level item.
                        cap = cap[0].match(this$1.rules.item);

                        next = false;
                        l = cap.length;
                        i = 0;

                        for (; i < l; i++) {
                            item = cap[i];

                            // Remove the list item's bullet
                            // so it is seen as the next token.
                            space = item.length;
                            item = item.replace(/^ *([*+-]|\d+\.) +/, '');

                            // Outdent whatever the
                            // list item contains. Hacky.
                            if (~item.indexOf('\n ')) {
                                space -= item.length;
                                item = !this$1.options.pedantic
                                    ? item.replace(new RegExp('^ {1,' + space + '}', 'gm'), '')
                                    : item.replace(/^ {1,4}/gm, '');
                            }

                            // Determine whether the next list item belongs here.
                            // Backpedal if it does not belong in this list.
                            if (this$1.options.smartLists && i !== l - 1) {
                                b = block.bullet.exec(cap[i + 1])[0];
                                if (bull !== b && !(bull.length > 1 && b.length > 1)) {
                                    src = cap.slice(i + 1).join('\n') + src;
                                    i = l - 1;
                                }
                            }

                            // Determine whether item is loose or not.
                            // Use: /(^|\n)(?! )[^\n]+\n\n(?!\s*$)/
                            // for discount behavior.
                            loose = next || /\n\n(?!\s*$)/.test(item);
                            if (i !== l - 1) {
                                next = item.charAt(item.length - 1) === '\n';
                                if (!loose) { loose = next; }
                            }

                            this$1.tokens.push({
                                type: loose
                                    ? 'loose_item_start'
                                    : 'list_item_start'
                            });

                            // Recurse.
                            this$1.token(item, false, bq);

                            this$1.tokens.push({
                                type: 'list_item_end'
                            });
                        }

                        this$1.tokens.push({
                            type: 'list_end'
                        });

                        continue;
                    }

                    // html
                    if (cap = this$1.rules.html.exec(src)) {
                        src = src.substring(cap[0].length);
                        this$1.tokens.push({
                            type: this$1.options.sanitize
                                ? 'paragraph'
                                : 'html',
                            pre: !this$1.options.sanitizer
                            && (cap[1] === 'pre' || cap[1] === 'script' || cap[1] === 'style'),
                            text: cap[0]
                        });
                        continue;
                    }

                    // def
                    if ((!bq && top) && (cap = this$1.rules.def.exec(src))) {
                        src = src.substring(cap[0].length);
                        this$1.tokens.links[cap[1].toLowerCase()] = {
                            href: cap[2],
                            title: cap[3]
                        };
                        continue;
                    }

                    // table (gfm)
                    if (top && (cap = this$1.rules.table.exec(src))) {
                        src = src.substring(cap[0].length);

                        item = {
                            type: 'table',
                            header: cap[1].replace(/^ *| *\| *$/g, '').split(/ *\| */),
                            align: cap[2].replace(/^ *|\| *$/g, '').split(/ *\| */),
                            cells: cap[3].replace(/(?: *\| *)?\n$/, '').split('\n')
                        };

                        for (i = 0; i < item.align.length; i++) {
                            if (/^ *-+: *$/.test(item.align[i])) {
                                item.align[i] = 'right';
                            } else if (/^ *:-+: *$/.test(item.align[i])) {
                                item.align[i] = 'center';
                            } else if (/^ *:-+ *$/.test(item.align[i])) {
                                item.align[i] = 'left';
                            } else {
                                item.align[i] = null;
                            }
                        }

                        for (i = 0; i < item.cells.length; i++) {
                            item.cells[i] = item.cells[i]
                                .replace(/^ *\| *| *\| *$/g, '')
                                .split(/ *\| */);
                        }

                        this$1.tokens.push(item);

                        continue;
                    }

                    // top-level paragraph
                    if (top && (cap = this$1.rules.paragraph.exec(src))) {
                        src = src.substring(cap[0].length);
                        this$1.tokens.push({
                            type: 'paragraph',
                            text: cap[1].charAt(cap[1].length - 1) === '\n'
                                ? cap[1].slice(0, -1)
                                : cap[1]
                        });
                        continue;
                    }

                    // text
                    if (cap = this$1.rules.text.exec(src)) {
                        // Top-level should never reach here.
                        src = src.substring(cap[0].length);
                        this$1.tokens.push({
                            type: 'text',
                            text: cap[0]
                        });
                        continue;
                    }

                    if (src) {
                        throw new
                        Error('Infinite loop on byte: ' + src.charCodeAt(0));
                    }
                }

                return this.tokens;
            };

            /**
             * Inline-Level Grammar
             */

            var inline = {
                escape: /^\\([\\`*{}\[\]()#+\-.!_>])/,
                autolink: /^<([^ >]+(@|:\/)[^ >]+)>/,
                url: noop,
                tag: /^<!--[\s\S]*?-->|^<\/?\w+(?:"[^"]*"|'[^']*'|[^'">])*?>/,
                link: /^!?\[(inside)\]\(href\)/,
                reflink: /^!?\[(inside)\]\s*\[([^\]]*)\]/,
                nolink: /^!?\[((?:\[[^\]]*\]|[^\[\]])*)\]/,
                strong: /^__([\s\S]+?)__(?!_)|^\*\*([\s\S]+?)\*\*(?!\*)/,
                em: /^\b_((?:[^_]|__)+?)_\b|^\*((?:\*\*|[\s\S])+?)\*(?!\*)/,
                code: /^(`+)\s*([\s\S]*?[^`])\s*\1(?!`)/,
                br: /^ {2,}\n(?!\s*$)/,
                del: noop,
                text: /^[\s\S]+?(?=[\\<!\[_*`]| {2,}\n|$)/
            };

            inline._inside = /(?:\[[^\]]*\]|[^\[\]]|\](?=[^\[]*\]))*/;
            inline._href = /\s*<?([\s\S]*?)>?(?:\s+['"]([\s\S]*?)['"])?\s*/;

            inline.link = replace(inline.link)
            ('inside', inline._inside)
            ('href', inline._href)
            ();

            inline.reflink = replace(inline.reflink)
            ('inside', inline._inside)
            ();

            /**
             * Normal Inline Grammar
             */

            inline.normal = merge({}, inline);

            /**
             * Pedantic Inline Grammar
             */

            inline.pedantic = merge({}, inline.normal, {
                strong: /^__(?=\S)([\s\S]*?\S)__(?!_)|^\*\*(?=\S)([\s\S]*?\S)\*\*(?!\*)/,
                em: /^_(?=\S)([\s\S]*?\S)_(?!_)|^\*(?=\S)([\s\S]*?\S)\*(?!\*)/
            });

            /**
             * GFM Inline Grammar
             */

            inline.gfm = merge({}, inline.normal, {
                escape: replace(inline.escape)('])', '~|])')(),
                url: /^(https?:\/\/[^\s<]+[^<.,:;"')\]\s])/,
                del: /^~~(?=\S)([\s\S]*?\S)~~/,
                text: replace(inline.text)
                (']|', '~]|')
                ('|', '|https?://|')
                ()
            });

            /**
             * GFM + Line Breaks Inline Grammar
             */

            inline.breaks = merge({}, inline.gfm, {
                br: replace(inline.br)('{2,}', '*')(),
                text: replace(inline.gfm.text)('{2,}', '*')()
            });

            /**
             * Inline Lexer & Compiler
             */

            function InlineLexer(links, options) {
                this.options = options || marked.defaults;
                this.links = links;
                this.rules = inline.normal;
                this.renderer = this.options.renderer || new Renderer;
                this.renderer.options = this.options;

                if (!this.links) {
                    throw new
                    Error('Tokens array requires a `links` property.');
                }

                if (this.options.gfm) {
                    if (this.options.breaks) {
                        this.rules = inline.breaks;
                    } else {
                        this.rules = inline.gfm;
                    }
                } else if (this.options.pedantic) {
                    this.rules = inline.pedantic;
                }
            }

            /**
             * Expose Inline Rules
             */

            InlineLexer.rules = inline;

            /**
             * Static Lexing/Compiling Method
             */

            InlineLexer.output = function(src, links, options) {
                var inline = new InlineLexer(links, options);
                return inline.output(src);
            };

            /**
             * Lexing/Compiling
             */

            InlineLexer.prototype.output = function(src) {
                var this$1 = this;

                var out = ''
                    , link
                    , text
                    , href
                    , cap;

                while (src) {
                    // escape
                    if (cap = this$1.rules.escape.exec(src)) {
                        src = src.substring(cap[0].length);
                        out += cap[1];
                        continue;
                    }

                    // autolink
                    if (cap = this$1.rules.autolink.exec(src)) {
                        src = src.substring(cap[0].length);
                        if (cap[2] === '@') {
                            text = cap[1].charAt(6) === ':'
                                ? this$1.mangle(cap[1].substring(7))
                                : this$1.mangle(cap[1]);
                            href = this$1.mangle('mailto:') + text;
                        } else {
                            text = escape(cap[1]);
                            href = text;
                        }
                        out += this$1.renderer.link(href, null, text);
                        continue;
                    }

                    // url (gfm)
                    if (!this$1.inLink && (cap = this$1.rules.url.exec(src))) {
                        src = src.substring(cap[0].length);
                        text = escape(cap[1]);
                        href = text;
                        out += this$1.renderer.link(href, null, text);
                        continue;
                    }

                    // tag
                    if (cap = this$1.rules.tag.exec(src)) {
                        if (!this$1.inLink && /^<a /i.test(cap[0])) {
                            this$1.inLink = true;
                        } else if (this$1.inLink && /^<\/a>/i.test(cap[0])) {
                            this$1.inLink = false;
                        }
                        src = src.substring(cap[0].length);
                        out += this$1.options.sanitize
                            ? this$1.options.sanitizer
                                ? this$1.options.sanitizer(cap[0])
                                : escape(cap[0])
                            : cap[0];
                        continue;
                    }

                    // link
                    if (cap = this$1.rules.link.exec(src)) {
                        src = src.substring(cap[0].length);
                        this$1.inLink = true;
                        out += this$1.outputLink(cap, {
                            href: cap[2],
                            title: cap[3]
                        });
                        this$1.inLink = false;
                        continue;
                    }

                    // reflink, nolink
                    if ((cap = this$1.rules.reflink.exec(src))
                        || (cap = this$1.rules.nolink.exec(src))) {
                        src = src.substring(cap[0].length);
                        link = (cap[2] || cap[1]).replace(/\s+/g, ' ');
                        link = this$1.links[link.toLowerCase()];
                        if (!link || !link.href) {
                            out += cap[0].charAt(0);
                            src = cap[0].substring(1) + src;
                            continue;
                        }
                        this$1.inLink = true;
                        out += this$1.outputLink(cap, link);
                        this$1.inLink = false;
                        continue;
                    }

                    // strong
                    if (cap = this$1.rules.strong.exec(src)) {
                        src = src.substring(cap[0].length);
                        out += this$1.renderer.strong(this$1.output(cap[2] || cap[1]));
                        continue;
                    }

                    // em
                    if (cap = this$1.rules.em.exec(src)) {
                        src = src.substring(cap[0].length);
                        out += this$1.renderer.em(this$1.output(cap[2] || cap[1]));
                        continue;
                    }

                    // code
                    if (cap = this$1.rules.code.exec(src)) {
                        src = src.substring(cap[0].length);
                        out += this$1.renderer.codespan(escape(cap[2], true));
                        continue;
                    }

                    // br
                    if (cap = this$1.rules.br.exec(src)) {
                        src = src.substring(cap[0].length);
                        out += this$1.renderer.br();
                        continue;
                    }

                    // del (gfm)
                    if (cap = this$1.rules.del.exec(src)) {
                        src = src.substring(cap[0].length);
                        out += this$1.renderer.del(this$1.output(cap[1]));
                        continue;
                    }

                    // text
                    if (cap = this$1.rules.text.exec(src)) {
                        src = src.substring(cap[0].length);
                        out += this$1.renderer.text(escape(this$1.smartypants(cap[0])));
                        continue;
                    }

                    if (src) {
                        throw new
                        Error('Infinite loop on byte: ' + src.charCodeAt(0));
                    }
                }

                return out;
            };

            /**
             * Compile Link
             */

            InlineLexer.prototype.outputLink = function(cap, link) {
                var href = escape(link.href)
                    , title = link.title ? escape(link.title) : null;

                return cap[0].charAt(0) !== '!'
                    ? this.renderer.link(href, title, this.output(cap[1]))
                    : this.renderer.image(href, title, escape(cap[1]));
            };

            /**
             * Smartypants Transformations
             */

            InlineLexer.prototype.smartypants = function(text) {
                if (!this.options.smartypants) { return text; }
                return text
                // em-dashes
                    .replace(/---/g, '\u2014')
                    // en-dashes
                    .replace(/--/g, '\u2013')
                    // opening singles
                    .replace(/(^|[-\u2014/(\[{"\s])'/g, '$1\u2018')
                    // closing singles & apostrophes
                    .replace(/'/g, '\u2019')
                    // opening doubles
                    .replace(/(^|[-\u2014/(\[{\u2018\s])"/g, '$1\u201c')
                    // closing doubles
                    .replace(/"/g, '\u201d')
                    // ellipses
                    .replace(/\.{3}/g, '\u2026');
            };

            /**
             * Mangle Links
             */

            InlineLexer.prototype.mangle = function(text) {
                if (!this.options.mangle) { return text; }
                var out = ''
                    , l = text.length
                    , i = 0
                    , ch;

                for (; i < l; i++) {
                    ch = text.charCodeAt(i);
                    if (Math.random() > 0.5) {
                        ch = 'x' + ch.toString(16);
                    }
                    out += '&#' + ch + ';';
                }

                return out;
            };

            /**
             * Renderer
             */

            function Renderer(options) {
                this.options = options || {};
            }

            Renderer.prototype.code = function(code, lang, escaped) {
                if (this.options.highlight) {
                    var out = this.options.highlight(code, lang);
                    if (out != null && out !== code) {
                        escaped = true;
                        code = out;
                    }
                }

                if (!lang) {
                    return '<pre><code>'
                        + (escaped ? code : escape(code, true))
                        + '\n</code></pre>';
                }

                return '<pre><code class="'
                    + this.options.langPrefix
                    + escape(lang, true)
                    + '">'
                    + (escaped ? code : escape(code, true))
                    + '\n</code></pre>\n';
            };

            Renderer.prototype.blockquote = function(quote) {
                return '<blockquote>\n' + quote + '</blockquote>\n';
            };

            Renderer.prototype.html = function(html) {
                return html;
            };

            Renderer.prototype.heading = function(text, level, raw) {
                return '<h'
                    + level
                    + ' id="'
                    + this.options.headerPrefix
                    + raw.toLowerCase().replace(/[^\w]+/g, '-')
                    + '">'
                    + text
                    + '</h'
                    + level
                    + '>\n';
            };

            Renderer.prototype.hr = function() {
                return this.options.xhtml ? '<hr/>\n' : '<hr>\n';
            };

            Renderer.prototype.list = function(body, ordered) {
                var type = ordered ? 'ol' : 'ul';
                return '<' + type + '>\n' + body + '</' + type + '>\n';
            };

            Renderer.prototype.listitem = function(text) {
                return '<li>' + text + '</li>\n';
            };

            Renderer.prototype.paragraph = function(text) {
                return '<p>' + text + '</p>\n';
            };

            Renderer.prototype.table = function(header, body) {
                return '<table>\n'
                    + '<thead>\n'
                    + header
                    + '</thead>\n'
                    + '<tbody>\n'
                    + body
                    + '</tbody>\n'
                    + '</table>\n';
            };

            Renderer.prototype.tablerow = function(content) {
                return '<tr>\n' + content + '</tr>\n';
            };

            Renderer.prototype.tablecell = function(content, flags) {
                var type = flags.header ? 'th' : 'td';
                var tag = flags.align
                    ? '<' + type + ' style="text-align:' + flags.align + '">'
                    : '<' + type + '>';
                return tag + content + '</' + type + '>\n';
            };

// span level renderer
            Renderer.prototype.strong = function(text) {
                return '<strong>' + text + '</strong>';
            };

            Renderer.prototype.em = function(text) {
                return '<em>' + text + '</em>';
            };

            Renderer.prototype.codespan = function(text) {
                return '<code>' + text + '</code>';
            };

            Renderer.prototype.br = function() {
                return this.options.xhtml ? '<br/>' : '<br>';
            };

            Renderer.prototype.del = function(text) {
                return '<del>' + text + '</del>';
            };

            Renderer.prototype.link = function(href, title, text) {
                if (this.options.sanitize) {
                    try {
                        var prot = decodeURIComponent(unescape(href))
                            .replace(/[^\w:]/g, '')
                            .toLowerCase();
                    } catch (e) {
                        return '';
                    }
                    if (prot.indexOf('javascript:') === 0 || prot.indexOf('vbscript:') === 0) {
                        return '';
                    }
                }
                var out = '<a href="' + href + '"';
                if (title) {
                    out += ' title="' + title + '"';
                }
                out += '>' + text + '</a>';
                return out;
            };

            Renderer.prototype.image = function(href, title, text) {
                var out = '<img src="' + href + '" alt="' + text + '"';
                if (title) {
                    out += ' title="' + title + '"';
                }
                out += this.options.xhtml ? '/>' : '>';
                return out;
            };

            Renderer.prototype.text = function(text) {
                return text;
            };

            /**
             * Parsing & Compiling
             */

            function Parser(options) {
                this.tokens = [];
                this.token = null;
                this.options = options || marked.defaults;
                this.options.renderer = this.options.renderer || new Renderer;
                this.renderer = this.options.renderer;
                this.renderer.options = this.options;
            }

            /**
             * Static Parse Method
             */

            Parser.parse = function(src, options, renderer) {
                var parser = new Parser(options, renderer);
                return parser.parse(src);
            };

            /**
             * Parse Loop
             */

            Parser.prototype.parse = function(src) {
                var this$1 = this;

                this.inline = new InlineLexer(src.links, this.options, this.renderer);
                this.tokens = src.reverse();

                var out = '';
                while (this.next()) {
                    out += this$1.tok();
                }

                return out;
            };

            /**
             * Next Token
             */

            Parser.prototype.next = function() {
                return this.token = this.tokens.pop();
            };

            /**
             * Preview Next Token
             */

            Parser.prototype.peek = function() {
                return this.tokens[this.tokens.length - 1] || 0;
            };

            /**
             * Parse Text Tokens
             */

            Parser.prototype.parseText = function() {
                var this$1 = this;

                var body = this.token.text;

                while (this.peek().type === 'text') {
                    body += '\n' + this$1.next().text;
                }

                return this.inline.output(body);
            };

            /**
             * Parse Current Token
             */

            Parser.prototype.tok = function() {
                var this$1 = this;

                switch (this.token.type) {
                    case 'space': {
                        return '';
                    }
                    case 'hr': {
                        return this.renderer.hr();
                    }
                    case 'heading': {
                        return this.renderer.heading(
                            this.inline.output(this.token.text),
                            this.token.depth,
                            this.token.text);
                    }
                    case 'code': {
                        return this.renderer.code(this.token.text,
                            this.token.lang,
                            this.token.escaped);
                    }
                    case 'table': {
                        var header = ''
                            , body = ''
                            , i
                            , row
                            , cell
                            , flags
                            , j;

                        // header
                        cell = '';
                        for (i = 0; i < this.token.header.length; i++) {
                            flags = { header: true, align: this$1.token.align[i] };
                            cell += this$1.renderer.tablecell(
                                this$1.inline.output(this$1.token.header[i]),
                                { header: true, align: this$1.token.align[i] }
                            );
                        }
                        header += this.renderer.tablerow(cell);

                        for (i = 0; i < this.token.cells.length; i++) {
                            row = this$1.token.cells[i];

                            cell = '';
                            for (j = 0; j < row.length; j++) {
                                cell += this$1.renderer.tablecell(
                                    this$1.inline.output(row[j]),
                                    { header: false, align: this$1.token.align[j] }
                                );
                            }

                            body += this$1.renderer.tablerow(cell);
                        }
                        return this.renderer.table(header, body);
                    }
                    case 'blockquote_start': {
                        var body = '';

                        while (this.next().type !== 'blockquote_end') {
                            body += this$1.tok();
                        }

                        return this.renderer.blockquote(body);
                    }
                    case 'list_start': {
                        var body = ''
                            , ordered = this.token.ordered;

                        while (this.next().type !== 'list_end') {
                            body += this$1.tok();
                        }

                        return this.renderer.list(body, ordered);
                    }
                    case 'list_item_start': {
                        var body = '';

                        while (this.next().type !== 'list_item_end') {
                            body += this$1.token.type === 'text'
                                ? this$1.parseText()
                                : this$1.tok();
                        }

                        return this.renderer.listitem(body);
                    }
                    case 'loose_item_start': {
                        var body = '';

                        while (this.next().type !== 'list_item_end') {
                            body += this$1.tok();
                        }

                        return this.renderer.listitem(body);
                    }
                    case 'html': {
                        var html = !this.token.pre && !this.options.pedantic
                            ? this.inline.output(this.token.text)
                            : this.token.text;
                        return this.renderer.html(html);
                    }
                    case 'paragraph': {
                        return this.renderer.paragraph(this.inline.output(this.token.text));
                    }
                    case 'text': {
                        return this.renderer.paragraph(this.parseText());
                    }
                }
            };

            /**
             * Helpers
             */

            function escape(html, encode) {
                return html
                    .replace(!encode ? /&(?!#?\w+;)/g : /&/g, '&amp;')
                    .replace(/</g, '&lt;')
                    .replace(/>/g, '&gt;')
                    .replace(/"/g, '&quot;')
                    .replace(/'/g, '&#39;');
            }

            function unescape(html) {
                // explicitly match decimal, hex, and named HTML entities
                return html.replace(/&(#(?:\d+)|(?:#x[0-9A-Fa-f]+)|(?:\w+));?/g, function(_, n) {
                    n = n.toLowerCase();
                    if (n === 'colon') { return ':'; }
                    if (n.charAt(0) === '#') {
                        return n.charAt(1) === 'x'
                            ? String.fromCharCode(parseInt(n.substring(2), 16))
                            : String.fromCharCode(+n.substring(1));
                    }
                    return '';
                });
            }

            function replace(regex, opt) {
                regex = regex.source;
                opt = opt || '';
                return function self(name, val) {
                    if (!name) { return new RegExp(regex, opt); }
                    val = val.source || val;
                    val = val.replace(/(^|[^\[])\^/g, '$1');
                    regex = regex.replace(name, val);
                    return self;
                };
            }

            function noop() {}
            noop.exec = noop;

            function merge(obj) {
                var arguments$1 = arguments;

                var i = 1
                    , target
                    , key;

                for (; i < arguments.length; i++) {
                    target = arguments$1[i];
                    for (key in target) {
                        if (Object.prototype.hasOwnProperty.call(target, key)) {
                            obj[key] = target[key];
                        }
                    }
                }

                return obj;
            }


            /**
             * Marked
             */

            function marked(src, opt, callback) {
                if (callback || typeof opt === 'function') {
                    if (!callback) {
                        callback = opt;
                        opt = null;
                    }

                    opt = merge({}, marked.defaults, opt || {});

                    var highlight = opt.highlight
                        , tokens
                        , pending
                        , i = 0;

                    try {
                        tokens = Lexer.lex(src, opt);
                    } catch (e) {
                        return callback(e);
                    }

                    pending = tokens.length;

                    var done = function(err) {
                        if (err) {
                            opt.highlight = highlight;
                            return callback(err);
                        }

                        var out;

                        try {
                            out = Parser.parse(tokens, opt);
                        } catch (e) {
                            err = e;
                        }

                        opt.highlight = highlight;

                        return err
                            ? callback(err)
                            : callback(null, out);
                    };

                    if (!highlight || highlight.length < 3) {
                        return done();
                    }

                    delete opt.highlight;

                    if (!pending) { return done(); }

                    for (; i < tokens.length; i++) {
                        (function(token) {
                            if (token.type !== 'code') {
                                return --pending || done();
                            }
                            return highlight(token.text, token.lang, function(err, code) {
                                if (err) { return done(err); }
                                if (code == null || code === token.text) {
                                    return --pending || done();
                                }
                                token.text = code;
                                token.escaped = true;
                                --pending || done();
                            });
                        })(tokens[i]);
                    }

                    return;
                }
                try {
                    if (opt) { opt = merge({}, marked.defaults, opt); }
                    return Parser.parse(Lexer.lex(src, opt), opt);
                } catch (e) {
                    e.message += '\nPlease report this to https://github.com/chjj/marked.';
                    if ((opt || marked.defaults).silent) {
                        return '<p>An error occured:</p><pre>'
                            + escape(e.message + '', true)
                            + '</pre>';
                    }
                    throw e;
                }
            }

            /**
             * Options
             */

            marked.options =
                marked.setOptions = function(opt) {
                    merge(marked.defaults, opt);
                    return marked;
                };

            marked.defaults = {
                gfm: true,
                tables: true,
                breaks: false,
                pedantic: false,
                sanitize: false,
                sanitizer: null,
                mangle: true,
                smartLists: false,
                silent: false,
                highlight: null,
                langPrefix: 'lang-',
                smartypants: false,
                headerPrefix: '',
                renderer: new Renderer,
                xhtml: false
            };

            /**
             * Expose
             */

            marked.Parser = Parser;
            marked.parser = Parser.parse;

            marked.Renderer = Renderer;

            marked.Lexer = Lexer;
            marked.lexer = Lexer.lex;

            marked.InlineLexer = InlineLexer;
            marked.inlineLexer = InlineLexer.output;

            marked.parse = marked;

            {
                module.exports = marked;
            }

        }).call(function() {
            return this || (typeof window !== 'undefined' ? window : commonjsGlobal);
        }());
    });

    var prism = createCommonjsModule(function (module) {
        /* **********************************************
     Begin prism-core.js
********************************************** */

        var _self = (typeof window !== 'undefined')
            ? window   // if in browser
            : (
                (typeof WorkerGlobalScope !== 'undefined' && self instanceof WorkerGlobalScope)
                    ? self // if in worker
                    : {}   // if in node js
            );

        /**
         * Prism: Lightweight, robust, elegant syntax highlighting
         * MIT license http://www.opensource.org/licenses/mit-license.php/
         * @author Lea Verou http://lea.verou.me
         */

        var Prism = (function(){

// Private helper vars
            var lang = /\blang(?:uage)?-(\w+)\b/i;
            var uniqueId = 0;

            var _ = _self.Prism = {
                util: {
                    encode: function (tokens) {
                        if (tokens instanceof Token) {
                            return new Token(tokens.type, _.util.encode(tokens.content), tokens.alias);
                        } else if (_.util.type(tokens) === 'Array') {
                            return tokens.map(_.util.encode);
                        } else {
                            return tokens.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/\u00a0/g, ' ');
                        }
                    },

                    type: function (o) {
                        return Object.prototype.toString.call(o).match(/\[object (\w+)\]/)[1];
                    },

                    objId: function (obj) {
                        if (!obj['__id']) {
                            Object.defineProperty(obj, '__id', { value: ++uniqueId });
                        }
                        return obj['__id'];
                    },

                    // Deep clone a language definition (e.g. to extend it)
                    clone: function (o) {
                        var type = _.util.type(o);

                        switch (type) {
                            case 'Object':
                                var clone = {};

                                for (var key in o) {
                                    if (o.hasOwnProperty(key)) {
                                        clone[key] = _.util.clone(o[key]);
                                    }
                                }

                                return clone;

                            case 'Array':
                                // Check for existence for IE8
                                return o.map && o.map(function(v) { return _.util.clone(v); });
                        }

                        return o;
                    }
                },

                languages: {
                    extend: function (id, redef) {
                        var lang = _.util.clone(_.languages[id]);

                        for (var key in redef) {
                            lang[key] = redef[key];
                        }

                        return lang;
                    },

                    /**
                     * Insert a token before another token in a language literal
                     * As this needs to recreate the object (we cannot actually insert before keys in object literals),
                     * we cannot just provide an object, we need anobject and a key.
                     * @param inside The key (or language id) of the parent
                     * @param before The key to insert before. If not provided, the function appends instead.
                     * @param insert Object with the key/value pairs to insert
                     * @param root The object that contains `inside`. If equal to Prism.languages, it can be omitted.
                     */
                    insertBefore: function (inside, before, insert, root) {
                        root = root || _.languages;
                        var grammar = root[inside];

                        if (arguments.length == 2) {
                            insert = arguments[1];

                            for (var newToken in insert) {
                                if (insert.hasOwnProperty(newToken)) {
                                    grammar[newToken] = insert[newToken];
                                }
                            }

                            return grammar;
                        }

                        var ret = {};

                        for (var token in grammar) {

                            if (grammar.hasOwnProperty(token)) {

                                if (token == before) {

                                    for (var newToken in insert) {

                                        if (insert.hasOwnProperty(newToken)) {
                                            ret[newToken] = insert[newToken];
                                        }
                                    }
                                }

                                ret[token] = grammar[token];
                            }
                        }

                        // Update references in other language definitions
                        _.languages.DFS(_.languages, function(key, value) {
                            if (value === root[inside] && key != inside) {
                                this[key] = ret;
                            }
                        });

                        return root[inside] = ret;
                    },

                    // Traverse a language definition with Depth First Search
                    DFS: function(o, callback, type, visited) {
                        visited = visited || {};
                        for (var i in o) {
                            if (o.hasOwnProperty(i)) {
                                callback.call(o, i, o[i], type || i);

                                if (_.util.type(o[i]) === 'Object' && !visited[_.util.objId(o[i])]) {
                                    visited[_.util.objId(o[i])] = true;
                                    _.languages.DFS(o[i], callback, null, visited);
                                }
                                else if (_.util.type(o[i]) === 'Array' && !visited[_.util.objId(o[i])]) {
                                    visited[_.util.objId(o[i])] = true;
                                    _.languages.DFS(o[i], callback, i, visited);
                                }
                            }
                        }
                    }
                },
                plugins: {},

                highlightAll: function(async, callback) {
                    var env = {
                        callback: callback,
                        selector: 'code[class*="language-"], [class*="language-"] code, code[class*="lang-"], [class*="lang-"] code'
                    };

                    _.hooks.run("before-highlightall", env);

                    var elements = env.elements || document.querySelectorAll(env.selector);

                    for (var i=0, element; element = elements[i++];) {
                        _.highlightElement(element, async === true, env.callback);
                    }
                },

                highlightElement: function(element, async, callback) {
                    // Find language
                    var language, grammar, parent = element;

                    while (parent && !lang.test(parent.className)) {
                        parent = parent.parentNode;
                    }

                    if (parent) {
                        language = (parent.className.match(lang) || [,''])[1].toLowerCase();
                        grammar = _.languages[language];
                    }

                    // Set language on the element, if not present
                    element.className = element.className.replace(lang, '').replace(/\s+/g, ' ') + ' language-' + language;

                    // Set language on the parent, for styling
                    parent = element.parentNode;

                    if (/pre/i.test(parent.nodeName)) {
                        parent.className = parent.className.replace(lang, '').replace(/\s+/g, ' ') + ' language-' + language;
                    }

                    var code = element.textContent;

                    var env = {
                        element: element,
                        language: language,
                        grammar: grammar,
                        code: code
                    };

                    _.hooks.run('before-sanity-check', env);

                    if (!env.code || !env.grammar) {
                        if (env.code) {
                            env.element.textContent = env.code;
                        }
                        _.hooks.run('complete', env);
                        return;
                    }

                    _.hooks.run('before-highlight', env);

                    if (async && _self.Worker) {
                        var worker = new Worker(_.filename);

                        worker.onmessage = function(evt) {
                            env.highlightedCode = evt.data;

                            _.hooks.run('before-insert', env);

                            env.element.innerHTML = env.highlightedCode;

                            callback && callback.call(env.element);
                            _.hooks.run('after-highlight', env);
                            _.hooks.run('complete', env);
                        };

                        worker.postMessage(JSON.stringify({
                            language: env.language,
                            code: env.code,
                            immediateClose: true
                        }));
                    }
                    else {
                        env.highlightedCode = _.highlight(env.code, env.grammar, env.language);

                        _.hooks.run('before-insert', env);

                        env.element.innerHTML = env.highlightedCode;

                        callback && callback.call(element);

                        _.hooks.run('after-highlight', env);
                        _.hooks.run('complete', env);
                    }
                },

                highlight: function (text, grammar, language) {
                    var tokens = _.tokenize(text, grammar);
                    return Token.stringify(_.util.encode(tokens), language);
                },

                tokenize: function(text, grammar, language) {
                    var Token = _.Token;

                    var strarr = [text];

                    var rest = grammar.rest;

                    if (rest) {
                        for (var token in rest) {
                            grammar[token] = rest[token];
                        }

                        delete grammar.rest;
                    }

                    tokenloop: for (var token in grammar) {
                        if(!grammar.hasOwnProperty(token) || !grammar[token]) {
                            continue;
                        }

                        var patterns = grammar[token];
                        patterns = (_.util.type(patterns) === "Array") ? patterns : [patterns];

                        for (var j = 0; j < patterns.length; ++j) {
                            var pattern = patterns[j],
                                inside = pattern.inside,
                                lookbehind = !!pattern.lookbehind,
                                greedy = !!pattern.greedy,
                                lookbehindLength = 0,
                                alias = pattern.alias;

                            if (greedy && !pattern.pattern.global) {
                                // Without the global flag, lastIndex won't work
                                var flags = pattern.pattern.toString().match(/[imuy]*$/)[0];
                                pattern.pattern = RegExp(pattern.pattern.source, flags + "g");
                            }

                            pattern = pattern.pattern || pattern;

                            // Don’t cache length as it changes during the loop
                            for (var i=0, pos = 0; i<strarr.length; pos += strarr[i].length, ++i) {

                                var str = strarr[i];

                                if (strarr.length > text.length) {
                                    // Something went terribly wrong, ABORT, ABORT!
                                    break tokenloop;
                                }

                                if (str instanceof Token) {
                                    continue;
                                }

                                pattern.lastIndex = 0;

                                var match = pattern.exec(str),
                                    delNum = 1;

                                // Greedy patterns can override/remove up to two previously matched tokens
                                if (!match && greedy && i != strarr.length - 1) {
                                    pattern.lastIndex = pos;
                                    match = pattern.exec(text);
                                    if (!match) {
                                        break;
                                    }

                                    var from = match.index + (lookbehind ? match[1].length : 0),
                                        to = match.index + match[0].length,
                                        k = i,
                                        p = pos;

                                    for (var len = strarr.length; k < len && p < to; ++k) {
                                        p += strarr[k].length;
                                        // Move the index i to the element in strarr that is closest to from
                                        if (from >= p) {
                                            ++i;
                                            pos = p;
                                        }
                                    }

                                    /*
						 * If strarr[i] is a Token, then the match starts inside another Token, which is invalid
						 * If strarr[k - 1] is greedy we are in conflict with another greedy pattern
						 */
                                    if (strarr[i] instanceof Token || strarr[k - 1].greedy) {
                                        continue;
                                    }

                                    // Number of tokens to delete and replace with the new match
                                    delNum = k - i;
                                    str = text.slice(pos, p);
                                    match.index -= pos;
                                }

                                if (!match) {
                                    continue;
                                }

                                if(lookbehind) {
                                    lookbehindLength = match[1].length;
                                }

                                var from = match.index + lookbehindLength,
                                    match = match[0].slice(lookbehindLength),
                                    to = from + match.length,
                                    before = str.slice(0, from),
                                    after = str.slice(to);

                                var args = [i, delNum];

                                if (before) {
                                    args.push(before);
                                }

                                var wrapped = new Token(token, inside? _.tokenize(match, inside) : match, alias, match, greedy);

                                args.push(wrapped);

                                if (after) {
                                    args.push(after);
                                }

                                Array.prototype.splice.apply(strarr, args);
                            }
                        }
                    }

                    return strarr;
                },

                hooks: {
                    all: {},

                    add: function (name, callback) {
                        var hooks = _.hooks.all;

                        hooks[name] = hooks[name] || [];

                        hooks[name].push(callback);
                    },

                    run: function (name, env) {
                        var callbacks = _.hooks.all[name];

                        if (!callbacks || !callbacks.length) {
                            return;
                        }

                        for (var i=0, callback; callback = callbacks[i++];) {
                            callback(env);
                        }
                    }
                }
            };

            var Token = _.Token = function(type, content, alias, matchedStr, greedy) {
                this.type = type;
                this.content = content;
                this.alias = alias;
                // Copy of the full string this token was created from
                this.length = (matchedStr || "").length|0;
                this.greedy = !!greedy;
            };

            Token.stringify = function(o, language, parent) {
                if (typeof o == 'string') {
                    return o;
                }

                if (_.util.type(o) === 'Array') {
                    return o.map(function(element) {
                        return Token.stringify(element, language, o);
                    }).join('');
                }

                var env = {
                    type: o.type,
                    content: Token.stringify(o.content, language, parent),
                    tag: 'span',
                    classes: ['token', o.type],
                    attributes: {},
                    language: language,
                    parent: parent
                };

                if (env.type == 'comment') {
                    env.attributes['spellcheck'] = 'true';
                }

                if (o.alias) {
                    var aliases = _.util.type(o.alias) === 'Array' ? o.alias : [o.alias];
                    Array.prototype.push.apply(env.classes, aliases);
                }

                _.hooks.run('wrap', env);

                var attributes = Object.keys(env.attributes).map(function(name) {
                    return name + '="' + (env.attributes[name] || '').replace(/"/g, '&quot;') + '"';
                }).join(' ');

                return '<' + env.tag + ' class="' + env.classes.join(' ') + '"' + (attributes ? ' ' + attributes : '') + '>' + env.content + '</' + env.tag + '>';

            };

            if (!_self.document) {
                if (!_self.addEventListener) {
                    // in Node.js
                    return _self.Prism;
                }
                // In worker
                _self.addEventListener('message', function(evt) {
                    var message = JSON.parse(evt.data),
                        lang = message.language,
                        code = message.code,
                        immediateClose = message.immediateClose;

                    _self.postMessage(_.highlight(code, _.languages[lang], lang));
                    if (immediateClose) {
                        _self.close();
                    }
                }, false);

                return _self.Prism;
            }

//Get current script and highlight
            var script = document.currentScript || [].slice.call(document.getElementsByTagName("script")).pop();

            if (script) {
                _.filename = script.src;

                if (document.addEventListener && !script.hasAttribute('data-manual')) {
                    if(document.readyState !== "loading") {
                        if (window.requestAnimationFrame) {
                            window.requestAnimationFrame(_.highlightAll);
                        } else {
                            window.setTimeout(_.highlightAll, 16);
                        }
                    }
                    else {
                        document.addEventListener('DOMContentLoaded', _.highlightAll);
                    }
                }
            }

            return _self.Prism;

        })();

        if ('object' !== 'undefined' && module.exports) {
            module.exports = Prism;
        }

// hack for components to work correctly in node.js
        if (typeof commonjsGlobal !== 'undefined') {
            commonjsGlobal.Prism = Prism;
        }


        /* **********************************************
     Begin prism-markup.js
********************************************** */

        Prism.languages.markup = {
            'comment': /<!--[\w\W]*?-->/,
            'prolog': /<\?[\w\W]+?\?>/,
            'doctype': /<!DOCTYPE[\w\W]+?>/i,
            'cdata': /<!\[CDATA\[[\w\W]*?]]>/i,
            'tag': {
                pattern: /<\/?(?!\d)[^\s>\/=$<]+(?:\s+[^\s>\/=]+(?:=(?:("|')(?:\\\1|\\?(?!\1)[\w\W])*\1|[^\s'">=]+))?)*\s*\/?>/i,
                inside: {
                    'tag': {
                        pattern: /^<\/?[^\s>\/]+/i,
                        inside: {
                            'punctuation': /^<\/?/,
                            'namespace': /^[^\s>\/:]+:/
                        }
                    },
                    'attr-value': {
                        pattern: /=(?:('|")[\w\W]*?(\1)|[^\s>]+)/i,
                        inside: {
                            'punctuation': /[=>"']/
                        }
                    },
                    'punctuation': /\/?>/,
                    'attr-name': {
                        pattern: /[^\s>\/]+/,
                        inside: {
                            'namespace': /^[^\s>\/:]+:/
                        }
                    }

                }
            },
            'entity': /&#?[\da-z]{1,8};/i
        };

// Plugin to make entity title show the real entity, idea by Roman Komarov
        Prism.hooks.add('wrap', function(env) {

            if (env.type === 'entity') {
                env.attributes['title'] = env.content.replace(/&amp;/, '&');
            }
        });

        Prism.languages.xml = Prism.languages.markup;
        Prism.languages.html = Prism.languages.markup;
        Prism.languages.mathml = Prism.languages.markup;
        Prism.languages.svg = Prism.languages.markup;


        /* **********************************************
     Begin prism-css.js
********************************************** */

        Prism.languages.css = {
            'comment': /\/\*[\w\W]*?\*\//,
            'atrule': {
                pattern: /@[\w-]+?.*?(;|(?=\s*\{))/i,
                inside: {
                    'rule': /@[\w-]+/
                    // See rest below
                }
            },
            'url': /url\((?:(["'])(\\(?:\r\n|[\w\W])|(?!\1)[^\\\r\n])*\1|.*?)\)/i,
            'selector': /[^\{\}\s][^\{\};]*?(?=\s*\{)/,
            'string': {
                pattern: /("|')(\\(?:\r\n|[\w\W])|(?!\1)[^\\\r\n])*\1/,
                greedy: true
            },
            'property': /(\b|\B)[\w-]+(?=\s*:)/i,
            'important': /\B!important\b/i,
            'function': /[-a-z0-9]+(?=\()/i,
            'punctuation': /[(){};:]/
        };

        Prism.languages.css['atrule'].inside.rest = Prism.util.clone(Prism.languages.css);

        if (Prism.languages.markup) {
            Prism.languages.insertBefore('markup', 'tag', {
                'style': {
                    pattern: /(<style[\w\W]*?>)[\w\W]*?(?=<\/style>)/i,
                    lookbehind: true,
                    inside: Prism.languages.css,
                    alias: 'language-css'
                }
            });

            Prism.languages.insertBefore('inside', 'attr-value', {
                'style-attr': {
                    pattern: /\s*style=("|').*?\1/i,
                    inside: {
                        'attr-name': {
                            pattern: /^\s*style/i,
                            inside: Prism.languages.markup.tag.inside
                        },
                        'punctuation': /^\s*=\s*['"]|['"]\s*$/,
                        'attr-value': {
                            pattern: /.+/i,
                            inside: Prism.languages.css
                        }
                    },
                    alias: 'language-css'
                }
            }, Prism.languages.markup.tag);
        }

        /* **********************************************
     Begin prism-clike.js
********************************************** */

        Prism.languages.clike = {
            'comment': [
                {
                    pattern: /(^|[^\\])\/\*[\w\W]*?\*\//,
                    lookbehind: true
                },
                {
                    pattern: /(^|[^\\:])\/\/.*/,
                    lookbehind: true
                }
            ],
            'string': {
                pattern: /(["'])(\\(?:\r\n|[\s\S])|(?!\1)[^\\\r\n])*\1/,
                greedy: true
            },
            'class-name': {
                pattern: /((?:\b(?:class|interface|extends|implements|trait|instanceof|new)\s+)|(?:catch\s+\())[a-z0-9_\.\\]+/i,
                lookbehind: true,
                inside: {
                    punctuation: /(\.|\\)/
                }
            },
            'keyword': /\b(if|else|while|do|for|return|in|instanceof|function|new|try|throw|catch|finally|null|break|continue)\b/,
            'boolean': /\b(true|false)\b/,
            'function': /[a-z0-9_]+(?=\()/i,
            'number': /\b-?(?:0x[\da-f]+|\d*\.?\d+(?:e[+-]?\d+)?)\b/i,
            'operator': /--?|\+\+?|!=?=?|<=?|>=?|==?=?|&&?|\|\|?|\?|\*|\/|~|\^|%/,
            'punctuation': /[{}[\];(),.:]/
        };


        /* **********************************************
     Begin prism-javascript.js
********************************************** */

        Prism.languages.javascript = Prism.languages.extend('clike', {
            'keyword': /\b(as|async|await|break|case|catch|class|const|continue|debugger|default|delete|do|else|enum|export|extends|finally|for|from|function|get|if|implements|import|in|instanceof|interface|let|new|null|of|package|private|protected|public|return|set|static|super|switch|this|throw|try|typeof|var|void|while|with|yield)\b/,
            'number': /\b-?(0x[\dA-Fa-f]+|0b[01]+|0o[0-7]+|\d*\.?\d+([Ee][+-]?\d+)?|NaN|Infinity)\b/,
            // Allow for all non-ASCII characters (See http://stackoverflow.com/a/2008444)
            'function': /[_$a-zA-Z\xA0-\uFFFF][_$a-zA-Z0-9\xA0-\uFFFF]*(?=\()/i,
            'operator': /--?|\+\+?|!=?=?|<=?|>=?|==?=?|&&?|\|\|?|\?|\*\*?|\/|~|\^|%|\.{3}/
        });

        Prism.languages.insertBefore('javascript', 'keyword', {
            'regex': {
                pattern: /(^|[^/])\/(?!\/)(\[.+?]|\\.|[^/\\\r\n])+\/[gimyu]{0,5}(?=\s*($|[\r\n,.;})]))/,
                lookbehind: true,
                greedy: true
            }
        });

        Prism.languages.insertBefore('javascript', 'string', {
            'template-string': {
                pattern: /`(?:\\\\|\\?[^\\])*?`/,
                greedy: true,
                inside: {
                    'interpolation': {
                        pattern: /\$\{[^}]+\}/,
                        inside: {
                            'interpolation-punctuation': {
                                pattern: /^\$\{|\}$/,
                                alias: 'punctuation'
                            },
                            rest: Prism.languages.javascript
                        }
                    },
                    'string': /[\s\S]+/
                }
            }
        });

        if (Prism.languages.markup) {
            Prism.languages.insertBefore('markup', 'tag', {
                'script': {
                    pattern: /(<script[\w\W]*?>)[\w\W]*?(?=<\/script>)/i,
                    lookbehind: true,
                    inside: Prism.languages.javascript,
                    alias: 'language-javascript'
                }
            });
        }

        Prism.languages.js = Prism.languages.javascript;

        /* **********************************************
     Begin prism-file-highlight.js
********************************************** */

        (function () {
            if (typeof self === 'undefined' || !self.Prism || !self.document || !document.querySelector) {
                return;
            }

            self.Prism.fileHighlight = function() {

                var Extensions = {
                    'js': 'javascript',
                    'py': 'python',
                    'rb': 'ruby',
                    'ps1': 'powershell',
                    'psm1': 'powershell',
                    'sh': 'bash',
                    'bat': 'batch',
                    'h': 'c',
                    'tex': 'latex'
                };

                if(Array.prototype.forEach) { // Check to prevent error in IE8
                    Array.prototype.slice.call(document.querySelectorAll('pre[data-src]')).forEach(function (pre) {
                        var src = pre.getAttribute('data-src');

                        var language, parent = pre;
                        var lang = /\blang(?:uage)?-(?!\*)(\w+)\b/i;
                        while (parent && !lang.test(parent.className)) {
                            parent = parent.parentNode;
                        }

                        if (parent) {
                            language = (pre.className.match(lang) || [, ''])[1];
                        }

                        if (!language) {
                            var extension = (src.match(/\.(\w+)$/) || [, ''])[1];
                            language = Extensions[extension] || extension;
                        }

                        var code = document.createElement('code');
                        code.className = 'language-' + language;

                        pre.textContent = '';

                        code.textContent = 'Loading…';

                        pre.appendChild(code);

                        var xhr = new XMLHttpRequest();

                        xhr.open('GET', src, true);

                        xhr.onreadystatechange = function () {
                            if (xhr.readyState == 4) {

                                if (xhr.status < 400 && xhr.responseText) {
                                    code.textContent = xhr.responseText;

                                    Prism.highlightElement(code);
                                }
                                else if (xhr.status >= 400) {
                                    code.textContent = '✖ Error ' + xhr.status + ' while fetching file: ' + xhr.statusText;
                                }
                                else {
                                    code.textContent = '✖ Error: File does not exist or is empty';
                                }
                            }
                        };

                        xhr.send(null);
                    });
                }

            };

            document.addEventListener('DOMContentLoaded', self.Prism.fileHighlight);

        })();
    });

    /**
     * gen toc tree
     * @link https://github.com/killercup/grock/blob/5280ae63e16c5739e9233d9009bc235ed7d79a50/styles/solarized/assets/js/behavior.coffee#L54-L81
     * @param  {Array} toc
     * @param  {Number} maxLevel
     * @return {Array}
     */
    function genTree (toc, maxLevel) {
        var headlines = [];
        var last = {};

        toc.forEach(function (headline) {
            var level = headline.level || 1;
            var len = level - 1;

            if (level > maxLevel) { return }
            if (last[len]) {
                last[len].children = (last[len].children || []).concat(headline);
            } else {
                headlines.push(headline);
            }
            last[level] = headline;
        });

        return headlines
    }

    var cache$1 = {};
    var re = /[\u2000-\u206F\u2E00-\u2E7F\\'!"#$%&()*+,.\/:;<=>?@\[\]^`{|}~]/g;

    function lower (string) {
        return string.toLowerCase()
    }

    function slugify (str) {
        if (typeof str !== 'string') { return '' }

        var slug = str
            .trim()
            .replace(/[A-Z]+/g, lower)
            .replace(/<[^>\d]+>/g, '')
            .replace(re, '')
            .replace(/\s/g, '-')
            .replace(/-+/g, '-')
            .replace(/^(\d)/, '_$1');
        var count = cache$1[slug];

        count = cache$1.hasOwnProperty(slug) ? count + 1 : 0;
        cache$1[slug] = count;

        if (count) {
            slug = slug + '-' + count;
        }

        return slug
    }

    slugify.clear = function () {
        cache$1 = {};
    };

    function replace (m, $1) {
        return '<img class="emoji" src="https://assets-cdn.github.com/images/icons/emoji/' + $1 + '.png" alt="' + $1 + '" />'
    }

    function emojify (text) {
        return text
            .replace(/<(pre|template|code)[^>]*?>[\s\S]+?<\/(pre|template|code)>/g, function (m) { return m.replace(/:/g, '__colon__'); })
            .replace(/:(\w+?):/ig, (inBrowser && window.emojify) || replace)
            .replace(/__colon__/g, ':')
    }

    var decode = decodeURIComponent;
    var encode = encodeURIComponent;

    function parseQuery (query) {
        var res = {};

        query = query.trim().replace(/^(\?|#|&)/, '');

        if (!query) {
            return res
        }

        // Simple parse
        query.split('&').forEach(function (param) {
            var parts = param.replace(/\+/g, ' ').split('=');

            res[parts[0]] = parts[1] && decode(parts[1]);
        });

        return res
    }

    function stringifyQuery (obj, ignores) {
        if ( ignores === void 0 ) ignores = [];

        var qs = [];

        for (var key in obj) {
            if (ignores.indexOf(key) > -1) { continue }
            qs.push(
                obj[key]
                    ? ((encode(key)) + "=" + (encode(obj[key]))).toLowerCase()
                    : encode(key)
            );
        }

        return qs.length ? ("?" + (qs.join('&'))) : ''
    }

    function getPath () {
        var args = [], len = arguments.length;
        while ( len-- ) args[ len ] = arguments[ len ];

        return cleanPath(args.join('/'))
    }

    var isAbsolutePath = cached(function (path) {
        return /(:|(\/{2}))/g.test(path)
    });

    var getParentPath = cached(function (path) {
        return /\/$/g.test(path)
            ? path
            : (path = path.match(/(\S*\/)[^\/]+$/)) ? path[1] : ''
    });

    var cleanPath = cached(function (path) {
        return path.replace(/^\/+/, '/').replace(/([^:])\/{2,}/g, '$1/')
    });

    var cachedLinks = {};
    function getAndRemoveConfig (str) {
        if ( str === void 0 ) str = '';

        var config = {};

        if (str) {
            str = str
                .replace(/:([\w-]+)=?([\w-]+)?/g, function (m, key, value) {
                    config[key] = value || true;
                    return ''
                })
                .trim();
        }

        return { str: str, config: config }
    }

    var Compiler = function Compiler (config, router) {
        this.config = config;
        this.router = router;
        this.cacheTree = {};
        this.toc = [];
        this.linkTarget = config.externalLinkTarget || '_blank';
        this.contentBase = router.getBasePath();

        var renderer = this._initRenderer();
        var compile;
        var mdConf = config.markdown || {};

        if (isFn(mdConf)) {
            compile = mdConf(marked, renderer);
        } else {
            marked.setOptions(
                merge(mdConf, {
                    renderer: merge(renderer, mdConf.renderer)
                })
            );
            compile = marked;
        }

        this.compile = cached(function (text) {
            var html = '';

            if (!text) { return text }

            html = compile(text);
            html = config.noEmoji ? html : emojify(html);
            slugify.clear();

            return html
        });
    };

    Compiler.prototype.matchNotCompileLink = function matchNotCompileLink (link) {
        var links = this.config.noCompileLinks || [];

        for (var i = 0; i < links.length; i++) {
            var n = links[i];
            var re = cachedLinks[n] || (cachedLinks[n] = new RegExp(("^" + n + "$")));

            if (re.test(link)) {
                return link
            }
        }
    };

    Compiler.prototype._initRenderer = function _initRenderer () {
        var renderer = new marked.Renderer();
        var ref = this;
        var linkTarget = ref.linkTarget;
        var router = ref.router;
        var contentBase = ref.contentBase;
        var _self = this;
        var origin = {};

        /**
         * render anchor tag
         * @link https://github.com/chjj/marked#overriding-renderer-methods
         */
        origin.heading = renderer.heading = function (text, level) {
            var nextToc = { level: level, title: text };

            if (/{docsify-ignore}/g.test(text)) {
                text = text.replace('{docsify-ignore}', '');
                nextToc.title = text;
                nextToc.ignoreSubHeading = true;
            }

            if (/{docsify-ignore-all}/g.test(text)) {
                text = text.replace('{docsify-ignore-all}', '');
                nextToc.title = text;
                nextToc.ignoreAllSubs = true;
            }

            var slug = slugify(text);
            var url = router.toURL(router.getCurrentPath(), { id: slug });
            nextToc.slug = url;
            _self.toc.push(nextToc);

            return ("<h" + level + " id=\"" + slug + "\"><a href=\"" + url + "\" data-id=\"" + slug + "\" class=\"anchor\"><span>" + text + "</span></a></h" + level + ">")
        };
        // highlight code
        origin.code = renderer.code = function (code, lang) {
            if ( lang === void 0 ) lang = '';

            var hl = prism.highlight(
                code,
                prism.languages[lang] || prism.languages.markup
            );

            return ("<pre v-pre data-lang=\"" + lang + "\"><code class=\"lang-" + lang + "\">" + hl + "</code></pre>")
        };
        origin.link = renderer.link = function (href, title, text) {
            if ( title === void 0 ) title = '';

            var attrs = '';

            var ref = getAndRemoveConfig(title);
            var str = ref.str;
            var config = ref.config;
            title = str;

            if (
                !/:|(\/{2})/.test(href) &&
                !_self.matchNotCompileLink(href) &&
                !config.ignore
            ) {
                href = router.toURL(href, null, router.getCurrentPath());
            } else {
                attrs += " target=\"" + linkTarget + "\"";
            }

            if (config.target) {
                attrs += ' target=' + config.target;
            }

            if (config.disabled) {
                attrs += ' disabled';
                href = 'javascript:void(0)';
            }

            if (title) {
                attrs += " title=\"" + title + "\"";
            }

            return ("<a href=\"" + href + "\"" + attrs + ">" + text + "</a>")
        };
        origin.paragraph = renderer.paragraph = function (text) {
            if (/^!&gt;/.test(text)) {
                return helper('tip', text)
            } else if (/^\?&gt;/.test(text)) {
                return helper('warn', text)
            }
            return ("<p>" + text + "</p>")
        };
        origin.image = renderer.image = function (href, title, text) {
            var url = href;
            var attrs = '';

            var ref = getAndRemoveConfig(title);
            var str = ref.str;
            var config = ref.config;
            title = str;

            if (config['no-zoom']) {
                attrs += ' data-no-zoom';
            }

            if (title) {
                attrs += " title=\"" + title + "\"";
            }

            if (!isAbsolutePath(href)) {
                url = getPath(contentBase, href);
            }

            return ("<img src=\"" + url + "\"data-origin=\"" + href + "\" alt=\"" + text + "\"" + attrs + ">")
        };

        var CHECKED_RE = /^\[([ x])\] +/;
        origin.listitem = renderer.listitem = function (text) {
            var checked = CHECKED_RE.exec(text);
            if (checked) {
                text = text.replace(CHECKED_RE, ("<input type=\"checkbox\" " + (checked[1] === 'x' ? 'checked' : '') + " />"));
            }
            return ("<li" + (checked ? " class=\"task-list-item\"" : '') + ">" + text + "</li>\n")
        };

        renderer.origin = origin;

        return renderer
    };

    /**
     * Compile sidebar
     */
    Compiler.prototype.sidebar = function sidebar (text, level) {
        var currentPath = this.router.getCurrentPath();
        var html = '';

        if (text) {
            html = this.compile(text);
            html = html && html.match(/<ul[^>]*>([\s\S]+)<\/ul>/g)[0];
        } else {
            var tree$$1 = this.cacheTree[currentPath] || genTree(this.toc, level);
            html = tree(tree$$1, '<ul>');
            this.cacheTree[currentPath] = tree$$1;
        }

        return html
    };

    /**
     * Compile sub sidebar
     */
    Compiler.prototype.subSidebar = function subSidebar (level) {
        if (!level) {
            this.toc = [];
            return
        }
        var currentPath = this.router.getCurrentPath();
        var ref = this;
        var cacheTree = ref.cacheTree;
        var toc = ref.toc;

        toc[0] && toc[0].ignoreAllSubs && toc.splice(0);
        toc[0] && toc[0].level === 1 && toc.shift();

        for (var i = 0; i < toc.length; i++) {
            toc[i].ignoreSubHeading && toc.splice(i, 1) && i--;
        }

        var tree$$1 = cacheTree[currentPath] || genTree(toc, level);

        cacheTree[currentPath] = tree$$1;
        this.toc = [];
        return tree(tree$$1, '<ul class="app-sub-sidebar">')
    };

    Compiler.prototype.article = function article (text) {
        return this.compile(text)
    };

    /**
     * Compile cover page
     */
    Compiler.prototype.cover = function cover$$1 (text) {
        var cacheToc = this.toc.slice();
        var html = this.compile(text);

        this.toc = cacheToc.slice();

        return html
    };

    var title = $.title;
    /**
     * Toggle button
     */
    function btn (el, router) {
        var toggle = function (_) { return body.classList.toggle('close'); };

        el = getNode(el);
        on(el, 'click', function (e) {
            e.stopPropagation();
            toggle();
        });

        var sidebar = getNode('.sidebar');

        isMobile &&
        on(
            body,
            'click',
            function (_) { return body.classList.contains('close') && toggle(); }
        );
        on(sidebar, 'click', function (_) { return setTimeout((function (_) { return getAndActive(router, sidebar, true, true); }, 0)); }
        );
    }

    function sticky () {
        var cover = getNode('section.cover');
        if (!cover) { return }
        var coverHeight = cover.getBoundingClientRect().height;

        if (window.pageYOffset >= coverHeight || cover.classList.contains('hidden')) {
            toggleClass(body, 'add', 'sticky');
        } else {
            toggleClass(body, 'remove', 'sticky');
        }
    }

    /**
     * Get and active link
     * @param  {object} router
     * @param  {string|element}  el
     * @param  {Boolean} isParent   acitve parent
     * @param  {Boolean} autoTitle  auto set title
     * @return {element}
     */
    function getAndActive (router, el, isParent, autoTitle) {
        el = getNode(el);

        var links = findAll(el, 'a');
        var hash = router.toURL(router.getCurrentPath());
        var target;

        links.sort(function (a, b) { return b.href.length - a.href.length; }).forEach(function (a) {
            var href = a.getAttribute('href');
            var node = isParent ? a.parentNode : a;

            if (hash.indexOf(href) === 0 && !target) {
                target = a;
                toggleClass(node, 'add', 'active');
            } else {
                toggleClass(node, 'remove', 'active');
            }
        });

        if (autoTitle) {
            $.title = target ? ((target.innerText) + " - " + title) : title;
        }

        return target
    }

    var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) { descriptor.writable = true; } Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) { defineProperties(Constructor.prototype, protoProps); } if (staticProps) { defineProperties(Constructor, staticProps); } return Constructor; }; }();

    function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

    var Tweezer = function () {
        function Tweezer() {
            var opts = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};

            _classCallCheck(this, Tweezer);

            this.duration = opts.duration || 1000;
            this.ease = opts.easing || this._defaultEase;
            this.start = opts.start;
            this.end = opts.end;

            this.frame = null;
            this.next = null;
            this.isRunning = false;
            this.events = {};
            this.direction = this.start < this.end ? 'up' : 'down';
        }

        _createClass(Tweezer, [{
            key: 'begin',
            value: function begin() {
                if (!this.isRunning && this.next !== this.end) {
                    this.frame = window.requestAnimationFrame(this._tick.bind(this));
                }
                return this;
            }
        }, {
            key: 'stop',
            value: function stop() {
                window.cancelAnimationFrame(this.frame);
                this.isRunning = false;
                this.frame = null;
                this.timeStart = null;
                this.next = null;
                return this;
            }
        }, {
            key: 'on',
            value: function on(name, handler) {
                this.events[name] = this.events[name] || [];
                this.events[name].push(handler);
                return this;
            }
        }, {
            key: 'emit',
            value: function emit(name, val) {
                var _this = this;

                var e = this.events[name];
                e && e.forEach(function (handler) {
                    return handler.call(_this, val);
                });
            }
        }, {
            key: '_tick',
            value: function _tick(currentTime) {
                this.isRunning = true;

                var lastTick = this.next || this.start;

                if (!this.timeStart) { this.timeStart = currentTime; }
                this.timeElapsed = currentTime - this.timeStart;
                this.next = Math.round(this.ease(this.timeElapsed, this.start, this.end - this.start, this.duration));

                if (this._shouldTick(lastTick)) {
                    this.emit('tick', this.next);
                    this.frame = window.requestAnimationFrame(this._tick.bind(this));
                } else {
                    this.emit('tick', this.end);
                    this.emit('done', null);
                }
            }
        }, {
            key: '_shouldTick',
            value: function _shouldTick(lastTick) {
                return {
                    up: this.next < this.end && lastTick <= this.next,
                    down: this.next > this.end && lastTick >= this.next
                }[this.direction];
            }
        }, {
            key: '_defaultEase',
            value: function _defaultEase(t, b, c, d) {
                if ((t /= d / 2) < 1) { return c / 2 * t * t + b; }
                return -c / 2 * (--t * (t - 2) - 1) + b;
            }
        }]);

        return Tweezer;
    }();

    var nav = {};
    var hoverOver = false;
    var scroller = null;
    var enableScrollEvent = true;
    var coverHeight = 0;

    function scrollTo (el) {
        if (scroller) { scroller.stop(); }
        enableScrollEvent = false;
        scroller = new Tweezer({
            start: window.pageYOffset,
            end: el.getBoundingClientRect().top + window.pageYOffset,
            duration: 500
        })
            .on('tick', function (v) { return window.scrollTo(0, v); })
            .on('done', function () {
                enableScrollEvent = true;
                scroller = null;
            })
            .begin();
    }

    function highlight (path) {
        if (!enableScrollEvent) { return }
        var sidebar = getNode('.sidebar');
        var anchors = findAll('.anchor');
        var wrap = find(sidebar, '.sidebar-nav');
        var active = find(sidebar, 'li.active');
        var doc = document.documentElement;
        var top = ((doc && doc.scrollTop) || document.body.scrollTop) - coverHeight;
        var last;

        for (var i = 0, len = anchors.length; i < len; i += 1) {
            var node = anchors[i];

            if (node.offsetTop > top) {
                if (!last) { last = node; }
                break
            } else {
                last = node;
            }
        }
        if (!last) { return }
        var li = nav[getNavKey(path, last.getAttribute('data-id'))];

        if (!li || li === active) { return }

        active && active.classList.remove('active');
        li.classList.add('active');
        active = li;

        // scroll into view
        // https://github.com/vuejs/vuejs.org/blob/master/themes/vue/source/js/common.js#L282-L297
        if (!hoverOver && body.classList.contains('sticky')) {
            var height = sidebar.clientHeight;
            var curOffset = 0;
            var cur = active.offsetTop + active.clientHeight + 40;
            var isInView =
                active.offsetTop >= wrap.scrollTop && cur <= wrap.scrollTop + height;
            var notThan = cur - curOffset < height;
            var top$1 = isInView ? wrap.scrollTop : notThan ? curOffset : cur - height;

            sidebar.scrollTop = top$1;
        }
    }

    function getNavKey (path, id) {
        return (path + "?id=" + id)
    }

    function scrollActiveSidebar (router) {
        var cover = find('.cover.show');
        coverHeight = cover ? cover.offsetHeight : 0;

        var sidebar = getNode('.sidebar');
        var lis = findAll(sidebar, 'li');

        for (var i = 0, len = lis.length; i < len; i += 1) {
            var li = lis[i];
            var a = li.querySelector('a');
            if (!a) { continue }
            var href = a.getAttribute('href');

            if (href !== '/') {
                var ref = router.parse(href);
                var id = ref.query.id;
                var path$1 = ref.path;
                if (id) { href = getNavKey(path$1, id); }
            }

            if (href) { nav[decodeURIComponent(href)] = li; }
        }

        if (isMobile) { return }
        var path = router.getCurrentPath();
        off('scroll', function () { return highlight(path); });
        on('scroll', function () { return highlight(path); });
        on(sidebar, 'mouseover', function () {
            hoverOver = true;
        });
        on(sidebar, 'mouseleave', function () {
            hoverOver = false;
        });
    }

    function scrollIntoView (path, id) {
        if (!id) { return }

        var section = find('#' + id);
        section && scrollTo(section);

        var li = nav[getNavKey(path, id)];
        var sidebar = getNode('.sidebar');
        var active = find(sidebar, 'li.active');
        active && active.classList.remove('active');
        li && li.classList.add('active');
    }

    var scrollEl = $.scrollingElement || $.documentElement;

    function scroll2Top (offset) {
        if ( offset === void 0 ) offset = 0;

        scrollEl.scrollTop = offset === true ? 0 : Number(offset);
    }

    function executeScript () {
        var script = findAll('.markdown-section>script')
            .filter(function (s) { return !/template/.test(s.type); })[0];
        if (!script) { return false }
        var code = script.innerText.trim();
        if (!code) { return false }

        setTimeout(function (_) {
            window.__EXECUTE_RESULT__ = new Function(code)();
        }, 0);
    }

    function formatUpdated (html, updated, fn) {
        updated = typeof fn === 'function'
            ? fn(updated)
            : typeof fn === 'string'
                ? tinydate(fn)(new Date(updated))
                : updated;

        return html.replace(/{docsify-updated}/g, updated)
    }

    function renderMain (html) {
        if (!html) {
            // TODO: Custom 404 page
            html = 'not found';
        }

        this._renderTo('.markdown-section', html);
        // Render sidebar with the TOC
        !this.config.loadSidebar && this._renderSidebar();

        // execute script
        if (this.config.executeScript !== false &&
            typeof window.Vue !== 'undefined' &&
            !executeScript()) {
            setTimeout(function (_) {
                var vueVM = window.__EXECUTE_RESULT__;
                vueVM && vueVM.$destroy && vueVM.$destroy();
                window.__EXECUTE_RESULT__ = new window.Vue().$mount('#main');
            }, 0);
        } else {
            this.config.executeScript && executeScript();
        }
    }

    function renderNameLink (vm) {
        var el = getNode('.app-name-link');
        var nameLink = vm.config.nameLink;
        var path = vm.route.path;

        if (!el) { return }

        if (isPrimitive(vm.config.nameLink)) {
            el.setAttribute('href', nameLink);
        } else if (typeof nameLink === 'object') {
            var match = Object.keys(nameLink).filter(function (key) { return path.indexOf(key) > -1; })[0];

            el.setAttribute('href', nameLink[match]);
        }
    }

    function renderMixin (proto) {
        proto._renderTo = function (el, content, replace) {
            var node = getNode(el);
            if (node) { node[replace ? 'outerHTML' : 'innerHTML'] = content; }
        };

        proto._renderSidebar = function (text) {
            var ref = this.config;
            var maxLevel = ref.maxLevel;
            var subMaxLevel = ref.subMaxLevel;
            var loadSidebar = ref.loadSidebar;

            this._renderTo('.sidebar-nav', this.compiler.sidebar(text, maxLevel));
            var activeEl = getAndActive(this.router, '.sidebar-nav', true, true);
            if (loadSidebar && activeEl) {
                activeEl.parentNode.innerHTML += (this.compiler.subSidebar(subMaxLevel) || '');
            } else {
                // reset toc
                this.compiler.subSidebar();
            }
            // bind event
            this._bindEventOnRendered(activeEl);
        };

        proto._bindEventOnRendered = function (activeEl) {
            var ref = this.config;
            var autoHeader = ref.autoHeader;
            var auto2top = ref.auto2top;

            scrollActiveSidebar(this.router);

            if (autoHeader && activeEl) {
                var main$$1 = getNode('#main');
                var firstNode = main$$1.children[0];
                if (firstNode && firstNode.tagName !== 'H1') {
                    var h1 = create('h1');
                    h1.innerText = activeEl.innerText;
                    before(main$$1, h1);
                }
            }

            auto2top && scroll2Top(auto2top);
        };

        proto._renderNav = function (text) {
            text && this._renderTo('nav', this.compiler.compile(text));
            getAndActive(this.router, 'nav');
        };

        proto._renderMain = function (text, opt) {
            var this$1 = this;
            if ( opt === void 0 ) opt = {};

            if (!text) {
                return renderMain.call(this, text)
            }

            callHook(this, 'beforeEach', text, function (result) {
                var html = this$1.isHTML ? result : this$1.compiler.compile(result);
                if (opt.updatedAt) {
                    html = formatUpdated(html, opt.updatedAt, this$1.config.formatUpdated);
                }

                callHook(this$1, 'afterEach', html, function (text) { return renderMain.call(this$1, text); });
            });
        };

        proto._renderCover = function (text) {
            var el = getNode('.cover');
            if (!text) {
                toggleClass(el, 'remove', 'show');
                return
            }
            toggleClass(el, 'add', 'show');

            var html = this.coverIsHTML ? text : this.compiler.cover(text);
            var m = html.trim().match('<p><img.*?data-origin="(.*?)"[^a]+alt="(.*?)">([^<]*?)</p>$');

            if (m) {
                if (m[2] === 'color') {
                    el.style.background = m[1] + (m[3] || '');
                } else {
                    var path = m[1];

                    toggleClass(el, 'add', 'has-mask');
                    if (!isAbsolutePath(m[1])) {
                        path = getPath(this.router.getBasePath(), m[1]);
                    }
                    el.style.backgroundImage = "url(" + path + ")";
                    el.style.backgroundSize = 'cover';
                    el.style.backgroundPosition = 'center center';
                }
                html = html.replace(m[0], '');
            }

            this._renderTo('.cover-main', html);
            sticky();
        };

        proto._updateRender = function () {
            // render name link
            renderNameLink(this);
        };
    }

    function initRender (vm) {
        var config = vm.config;

        // Init markdown compiler
        vm.compiler = new Compiler(config, vm.router);

        var id = config.el || '#app';
        var navEl = find('nav') || create('nav');

        var el = find(id);
        var html = '';
        var navAppendToTarget = body;

        if (el) {
            if (config.repo) {
                html += corner(config.repo);
            }
            if (config.coverpage) {
                html += cover();
            }

            html += main(config);
            // Render main app
            vm._renderTo(el, html, true);
        } else {
            vm.rendered = true;
        }

        if (config.mergeNavbar && isMobile) {
            navAppendToTarget = find('.sidebar');
        } else {
            navEl.classList.add('app-nav');

            if (!config.repo) {
                navEl.classList.add('no-badge');
            }
        }

        // Add nav
        before(navAppendToTarget, navEl);

        if (config.themeColor) {
            $.head.appendChild(
                create('div', theme(config.themeColor)).firstElementChild
            );
            // Polyfll
            cssVars(config.themeColor);
        }
        vm._updateRender();
        toggleClass(body, 'ready');
    }

    var cached$1 = {};

    function getAlias (path, alias, last) {
        var match = Object.keys(alias).filter(function (key) {
            var re = cached$1[key] || (cached$1[key] = new RegExp(("^" + key + "$")));
            return re.test(path) && path !== last
        })[0];

        return match
            ? getAlias(path.replace(cached$1[match], alias[match]), alias, path)
            : path
    }

    function getFileName (path) {
        return /\.(md|html)$/g.test(path)
            ? path
            : /\/$/g.test(path) ? (path + "README.md") : (path + ".md")
    }

    var History = function History (config) {
        this.config = config;
    };

    History.prototype.getBasePath = function getBasePath () {
        return this.config.basePath
    };

    History.prototype.getFile = function getFile (path, isRelative) {
        path = path || this.getCurrentPath();

        var ref = this;
        var config = ref.config;
        var base = this.getBasePath();

        path = config.alias ? getAlias(path, config.alias) : path;
        path = getFileName(path);
        path = path === '/README.md' ? config.homepage || path : path;
        path = isAbsolutePath(path) ? path : getPath(base, path);

        if (isRelative) {
            path = path.replace(new RegExp(("^" + base)), '');
        }

        return path
    };

    History.prototype.onchange = function onchange (cb) {
        if ( cb === void 0 ) cb = noop;

        cb();
    };

    History.prototype.getCurrentPath = function getCurrentPath () {};

    History.prototype.normalize = function normalize () {};

    History.prototype.parse = function parse () {};

    History.prototype.toURL = function toURL () {};

    function replaceHash (path) {
        var i = location.href.indexOf('#');
        location.replace(location.href.slice(0, i >= 0 ? i : 0) + '#' + path);
    }

    var replaceSlug = cached(function (path) {
        return path.replace('#', '?id=')
    });

    var HashHistory = (function (History$$1) {
        function HashHistory (config) {
            History$$1.call(this, config);
            this.mode = 'hash';
        }

        if ( History$$1 ) HashHistory.__proto__ = History$$1;
        HashHistory.prototype = Object.create( History$$1 && History$$1.prototype );
        HashHistory.prototype.constructor = HashHistory;

        HashHistory.prototype.getBasePath = function getBasePath () {
            var path = window.location.pathname || '';
            var base = this.config.basePath;

            return /^(\/|https?:)/g.test(base) ? base : cleanPath(path + '/' + base)
        };

        HashHistory.prototype.getCurrentPath = function getCurrentPath () {
            // We can't use location.hash here because it's not
            // consistent across browsers - Firefox will pre-decode it!
            var href = location.href;
            var index = href.indexOf('#');
            return index === -1 ? '' : href.slice(index + 1)
        };

        HashHistory.prototype.onchange = function onchange (cb) {
            if ( cb === void 0 ) cb = noop;

            on('hashchange', cb);
        };

        HashHistory.prototype.normalize = function normalize () {
            var path = this.getCurrentPath();

            path = replaceSlug(path);

            if (path.charAt(0) === '/') { return replaceHash(path) }
            replaceHash('/' + path);
        };

        /**
         * Parse the url
         * @param {string} [path=location.herf]
         * @return {object} { path, query }
         */
        HashHistory.prototype.parse = function parse (path) {
            if ( path === void 0 ) path = location.href;

            var query = '';

            var hashIndex = path.indexOf('#');
            if (hashIndex >= 0) {
                path = path.slice(hashIndex + 1);
            }

            var queryIndex = path.indexOf('?');
            if (queryIndex >= 0) {
                query = path.slice(queryIndex + 1);
                path = path.slice(0, queryIndex);
            }

            return {
                path: path,
                file: this.getFile(path, true),
                query: parseQuery(query)
            }
        };

        HashHistory.prototype.toURL = function toURL (path, params, currentRoute) {
            var local = currentRoute && path[0] === '#';
            var route = this.parse(replaceSlug(path));

            route.query = merge({}, route.query, params);
            path = route.path + stringifyQuery(route.query);
            path = path.replace(/\.md(\?)|\.md$/, '$1');

            if (local) {
                var idIndex = currentRoute.indexOf('?');
                path =
                    (idIndex > 0 ? currentRoute.substr(0, idIndex) : currentRoute) + path;
            }

            return cleanPath('#/' + path)
        };

        return HashHistory;
    }(History));

    var HTML5History = (function (History$$1) {
        function HTML5History (config) {
            History$$1.call(this, config);
            this.mode = 'history';
        }

        if ( History$$1 ) HTML5History.__proto__ = History$$1;
        HTML5History.prototype = Object.create( History$$1 && History$$1.prototype );
        HTML5History.prototype.constructor = HTML5History;

        HTML5History.prototype.getCurrentPath = function getCurrentPath () {
            var base = this.getBasePath();
            var path = window.location.pathname;

            if (base && path.indexOf(base) === 0) {
                path = path.slice(base.length);
            }

            return (path || '/') + window.location.search + window.location.hash
        };

        HTML5History.prototype.onchange = function onchange (cb) {
            if ( cb === void 0 ) cb = noop;

            on('click', function (e) {
                var el = e.target.tagName === 'A' ? e.target : e.target.parentNode;

                if (el.tagName === 'A' && !/_blank/.test(el.target)) {
                    e.preventDefault();
                    var url = el.href;
                    window.history.pushState({ key: url }, '', url);
                    cb();
                }
            });

            on('popstate', cb);
        };

        /**
         * Parse the url
         * @param {string} [path=location.href]
         * @return {object} { path, query }
         */
        HTML5History.prototype.parse = function parse (path) {
            if ( path === void 0 ) path = location.href;

            var query = '';

            var queryIndex = path.indexOf('?');
            if (queryIndex >= 0) {
                query = path.slice(queryIndex + 1);
                path = path.slice(0, queryIndex);
            }

            var base = getPath(location.origin);
            var baseIndex = path.indexOf(base);

            if (baseIndex > -1) {
                path = path.slice(baseIndex + base.length);
            }

            return {
                path: path,
                file: this.getFile(path),
                query: parseQuery(query)
            }
        };

        HTML5History.prototype.toURL = function toURL (path, params, currentRoute) {
            var local = currentRoute && path[0] === '#';
            var route = this.parse(path);

            route.query = merge({}, route.query, params);
            path = route.path + stringifyQuery(route.query);
            path = path.replace(/\.md(\?)|\.md$/, '$1');

            if (local) { path = currentRoute + path; }

            return cleanPath('/' + path)
        };

        return HTML5History;
    }(History));

    function routerMixin (proto) {
        proto.route = {};
    }

    var lastRoute = {};

    function updateRender (vm) {
        vm.router.normalize();
        vm.route = vm.router.parse();
        body.setAttribute('data-page', vm.route.file);
    }

    function initRouter (vm) {
        var config = vm.config;
        var mode = config.routerMode || 'hash';
        var router;

        if (mode === 'history' && supportsPushState) {
            router = new HTML5History(config);
        } else {
            router = new HashHistory(config);
        }

        vm.router = router;
        updateRender(vm);
        lastRoute = vm.route;

        router.onchange(function (_) {
            updateRender(vm);
            vm._updateRender();

            if (lastRoute.path === vm.route.path) {
                vm.$resetEvents();
                return
            }

            vm.$fetch();
            lastRoute = vm.route;
        });
    }

    function eventMixin (proto) {
        proto.$resetEvents = function () {
            scrollIntoView(this.route.path, this.route.query.id);
            getAndActive(this.router, 'nav');
        };
    }

    function initEvent (vm) {
        // Bind toggle button
        btn('button.sidebar-toggle', vm.router);
        // Bind sticky effect
        if (vm.config.coverpage) {
            !isMobile && on('scroll', sticky);
        } else {
            body.classList.add('sticky');
        }
    }

    function loadNested (path, qs, file, next, vm, first) {
        path = first ? path : path.replace(/\/$/, '');
        path = getParentPath(path);

        if (!path) { return }

        get(vm.router.getFile(path + file) + qs).then(next, function (_) { return loadNested(path, qs, file, next, vm); }
        );
    }

    function fetchMixin (proto) {
        var last;
        proto._fetch = function (cb) {
            var this$1 = this;
            if ( cb === void 0 ) cb = noop;

            var ref = this.route;
            var path = ref.path;
            var query = ref.query;
            var qs = stringifyQuery(query, ['id']);
            var ref$1 = this.config;
            var loadNavbar = ref$1.loadNavbar;
            var loadSidebar = ref$1.loadSidebar;

            // Abort last request
            last && last.abort && last.abort();

            last = get(this.router.getFile(path) + qs, true);

            // Current page is html
            this.isHTML = /\.html$/g.test(path);

            var loadSideAndNav = function () {
                if (!loadSidebar) { return cb() }

                var fn = function (result) {
                    this$1._renderSidebar(result);
                    cb();
                };

                // Load sidebar
                loadNested(path, qs, loadSidebar, fn, this$1, true);
            };

            // Load main content
            last.then(
                function (text, opt) {
                    this$1._renderMain(text, opt);
                    loadSideAndNav();
                },
                function (_) {
                    this$1._renderMain(null);
                    loadSideAndNav();
                }
            );

            // Load nav
            loadNavbar &&
            loadNested(
                path,
                qs,
                loadNavbar,
                function (text) { return this$1._renderNav(text); },
                this,
                true
            );
        };

        proto._fetchCover = function () {
            var this$1 = this;

            var ref = this.config;
            var coverpage = ref.coverpage;
            var query = this.route.query;
            var root = getParentPath(this.route.path);
            var path = this.router.getFile(root + coverpage);

            if (this.route.path !== '/' || !coverpage) {
                this._renderCover();
                return
            }

            this.coverIsHTML = /\.html$/g.test(path);
            get(path + stringifyQuery(query, ['id'])).then(function (text) { return this$1._renderCover(text); }
            );
        };

        proto.$fetch = function (cb) {
            var this$1 = this;
            if ( cb === void 0 ) cb = noop;

            this._fetchCover();
            this._fetch(function (result) {
                this$1.$resetEvents();
                callHook(this$1, 'doneEach');
                cb();
            });
        };
    }

    function initFetch (vm) {
        var ref = vm.config;
        var loadSidebar = ref.loadSidebar;

        // server-client renderer
        if (vm.rendered) {
            var activeEl = getAndActive(vm.router, '.sidebar-nav', true, true);
            if (loadSidebar && activeEl) {
                activeEl.parentNode.innerHTML += window.__SUB_SIDEBAR__;
            }
            vm._bindEventOnRendered(activeEl);
            vm._fetchCover();
            vm.$resetEvents();
            callHook(vm, 'doneEach');
            callHook(vm, 'ready');
        } else {
            vm.$fetch(function (_) { return callHook(vm, 'ready'); });
        }
    }

    function initMixin (proto) {
        proto._init = function () {
            var vm = this;
            vm.config = config || {};

            initLifecycle(vm); // Init hooks
            initPlugin(vm); // Install plugins
            callHook(vm, 'init');
            initRouter(vm); // Add router
            initRender(vm); // Render base DOM
            initEvent(vm); // Bind events
            initFetch(vm); // Fetch data
            callHook(vm, 'mounted');
        };
    }

    function initPlugin (vm) {
        [].concat(vm.config.plugins).forEach(function (fn) { return isFn(fn) && fn(vm._lifecycle, vm); });
    }



    var util = Object.freeze({
        cached: cached,
        hyphenate: hyphenate,
        merge: merge,
        isPrimitive: isPrimitive,
        noop: noop,
        isFn: isFn,
        inBrowser: inBrowser,
        isMobile: isMobile,
        supportsPushState: supportsPushState,
        parseQuery: parseQuery,
        stringifyQuery: stringifyQuery,
        getPath: getPath,
        isAbsolutePath: isAbsolutePath,
        getParentPath: getParentPath,
        cleanPath: cleanPath
    });

    var initGlobalAPI = function () {
        window.Docsify = { util: util, dom: dom, get: get, slugify: slugify };
        window.DocsifyCompiler = Compiler;
        window.marked = marked;
        window.Prism = prism;
    };

    /**
     * Fork https://github.com/bendrucker/document-ready/blob/master/index.js
     */
    function ready (callback) {
        var state = document.readyState;

        if (state === 'complete' || state === 'interactive') {
            return setTimeout(callback, 0)
        }

        document.addEventListener('DOMContentLoaded', callback);
    }

    function Docsify () {
        this._init();
    }

    var proto = Docsify.prototype;

    initMixin(proto);
    routerMixin(proto);
    renderMixin(proto);
    fetchMixin(proto);
    eventMixin(proto);

    /**
     * Global API
     */
    initGlobalAPI();

    /**
     * Version
     */
    Docsify.version = '4.5.7';

    /**
     * Run Docsify
     */
    ready(function (_) { return new Docsify(); });

}());
